FIX your Galvo Laser F-Theta Lens Distortion with Ezcad Corfile

[@Toshlad]

WOW!!! This is a game changer. I've had a 150mm lens that I've never been able to use and now with this you've made it possible. You are a rock star sir ...... thank you.

[@LaserEverything]

Yay! New lens! Have fun with it, glad it helped you!

[@Toshlad]

@@LaserEverything I admin a Facebook page called Fibre Laser Engravers UK and have recommended your channel to everyone.

[@LaserEverything]

@@Toshlad Thanks so much Kevin! I appreciate those kind of recommendations immensely they really help us out. Thank you so much.

[@jjchen330ci]

life saver!!! I spend over an hour to correct my new 110mm lens yesterday with old method... it was painful.... still not where I want it... I will try this new method today!!!

[@LaserEverything]

Nice, hope it works out, it's pretty easy!

[@ДилнозаМирусманова]

Recently I ordered a couple oftheta lenses, so watching your videos saved a ridiculous amount of my nerves, money, tears and time. My current machne seems to not been fixed at all when I received it. Because it has significant distortion and I can't wait when I can fix it now

[@LaserEverything]

Glad it helped :)

[@HandsonCNC]

If you have a laser printer or a traditional photo copier you can make pages of black paper, that works great as well.

[@LaserEverything]

Good idea!

[@bonesshed.]

Excellent reference to come back to should I need to. 1 question, maybe you have covered this and can link ? Imagine I have made a design, lets just say a circle in a circle which I want to cut out. I set the inner circle to cut first by selecting it as black. Then the outer as blue as second cut. ( both colours are 'on' ) Thats the correct way I believe to do inner first and then the outer ? However, my machine seems to always want to cut the outer circle out first !! I tried different colour combinations, saved, restarted machine etc but always outer first ?? any clues :-)

[@LaserEverything]

It's not about the colors it's about the order of the items in the object list in the top left corner of the screen. Make sure they're ordered correctly there top is first bottom is last and then try again.

[@bonesshed.]

@@LaserEverything BINGO !!! again you got me out of a spot :-) On my Co2 laser its done on colours, I expected it to be the same on the fibre. Ive been tearing my hair out trying to suss it out. Lol. Cheers Alex from across the pond in Blighty.

[@LaserEverything]

Cheers!

[@BigSouthProductions]

Thank you for this video. My distortion was pretty bad. The lines were visibly curved and this fixed it. Great tutorial.

[@LaserEverything]

Glad it helped!

[@plntlauve4421]

I had a problem, the size of output product mark do not fix the size as design on the ezcad..

[@LaserEverything]

If you can join either the discord or Facebook and send some photos we'd be happy to take a look. Links in the video description

[@TheDopalgangr]

Hi Alex, yes as others have said, you are a rock star! My laser never even came with a core file and I had been using it stock. You explained this spot on and now I have one that I can put into Lightburn, thanks brother.

[@LaserEverything]

Hell yeah! Glad it worked for ya!

[@MCHughes350]

How did you get a corfile? I don't have EZCad.

[@teamcookfitness]

If you’re just starting with lightburn from scratch do you need to go back and do this step?

[@LaserEverything]

There's no great way to generate cor files in LightBurn at the moment though I know it's something they're working on. In the meantime you'll have to use ezcads corfile executable to generate this file.

[@iZapThings]

Thank you for this video! I have EzCAD 3 and a lot of menus are not the same or found else where. This information saved he so much hassle. So much so I Subscribed, Liked, and Joined!

[@LaserEverything]

Hey iZap, glad it helped. Ez3 tutorials coming starting (hopefully tomorrow) with the new UV laser :)

[@framseen2]

what if I don't have a corfile? I started exclusively w/ lightburn so didn't do anything w/ ezcad...

[@RoaringCreekArms]

I am in the same boat as you. Never used EZcad and now lost the USB drive the laser company sent me...

[@lithgowlights859]

The only thing I would add is to check the zero of your calipers every couple of measurements, just in case. Great video, thanks Alex and good luck this weekend :)

[@LaserEverything]

I know I'm such a lazy bum lol I leave everything up to chance. Good important tip there Lithgow!

[@glennl4714]

Goodmoring Alex, quick question. I see that the outside lines of the box on the acrylic are not straight. Does that matter?

[@LaserEverything]

The final box tests usually run wider than your actual lens size. For example if you do the final box test for a 110 lens but 130 mm square is not straight You don't need to worry about that. It's not going to correct outside of the proper lens size.

[@glennl4714]

@Laser Everything Thank you! 😊

[@jeroenwerkbrouck2069]

thank you for all your video's and knowledge. I have a question. I have done the corefile several times now and when I let it engrave all of the rectangles, when I'm measuring the 110mm rectangle I already have an 1mm smaller rectangle (109mm) And the bigger the rectangle, the bigger the fault. Do you have any Idea what the problem could be? Thank you.

[@kevinkrieg99]

Got the same issue, haven't figured it out yet, any ideas?

[@Jakub737]

@@kevinkrieg99 search on youtube (9 pt and 25pt EZCad Calibration) AMS Innovations, LLC channel and do it 25 calibration everythink will be ok :-)

[@kevinkrieg99]

@@Jakub737 cheers man, I did that and the accuracy is much better, now I have less than 0.5% error over the whole 175mm lens field. Still not perfect, but better.

[@Travis_collection]

hi i just got a Galvo Laser , what is the setting for deep engrave Metal

[@LaserEverything]

It's hard to give one correct answer for that, it really depends on the metal, your lens, and your laser wattage/source. If you go to the channel homepage and search for "steel" or "aluminum" in the search bar of the profile, it should pull up a list for your material mostly to help with that more specifically. We share settings for every project we share on the channel in the video we do them in. Would recommend joining one of the linked communities in the description so the support team and community can help on a support thread.

[@milandestroyer6471]

Hi there, i love your videos! I have one question..why the lines away from the center are not straight, have a slight arc? Can it be done so that the lines at 50x50 and 200x200 are perfectly straight? It is a 200x200 lens.

[@LaserEverything]

There's always going to be distortion when projecting a square workspace through an circular lens. The best you can do is reattempt your measurements to see if you can find improvements. Make sure you're using the "change image" function so your landmark markings match what's on the screen or you'll be entering data for the wrong points. It's very important everything matches.

[@rodboorman4989]

Great video I also have the 175 MM I totally understand how to set distortion with ezcad now, but does this transfer to Lightburn or does it just set up in the laser instead of Lightburn thank you keep up the great work

[@LaserEverything]

Thank you! And absolutely, this translates to lightburn 100%. The tool itself is unfortunately ezcad (and ezcad driver) only, but the saved output file can be brought back to lightburn, and applied in the device settings for the machine in lightburn you setup with that lens size. It should import and correct for the distortion, skew, all that, but also account for which axis is seen as X, and if either of the axis' are reversed (as long as you do the image alignment step with corfile and the shapes). This can all be done manually if ezcad isn't an option, but it certainly consolidates the steps and reduces the time needed to get solid quality and proper setup done.

[@Chanvgap]

Is there a way to read the data in the COR file? Ive tried this on 3 lens' and on 2 it worked amazingly. The 175x175 lens, I have ran 3 times, and the measurements are always off by a large margin for the final measurement. I believe the scaling is incorrect, however the bulge, skew, and trap are fine. I'd like to manually change the scale, but I dont know the values of the Bulge, etc.

[@LaserEverything]

I think I responded to this elsewhere on the channel for ya but I can't remember - but no, unfortunately you can not extract values from corfiles the way things are right now. Hopefully that's something that's included when LightBurn supports native lens corrections in their software but for now we're stuck with corfiles which seem to save data encrypted. The only other option is to manually correct all lens correction fields :/

[@nathankluz5166]

Is this process the same or similar in Lightburn I do not see that I have ezcad installed on my system?

[@LaserEverything]

Via lightburn, you have to do the corrections manually since they don't have a designated utility to do the correction based on measurement. This means making an adjustment, testing, and adjusting more or less based on the result, make a square, test, adjust, square, test adjust, until you get the skew correct, edges straight and square, and then scale for size accuracy. It can be tedious and time consuming, which is why we prefer this method with ezcad. If you don't have a copy of ezcad, you can either ask your manufacturer for a copy if you trust them, and then follow the earlier guide episodes to swap temporarily to run the utility and export a corfile, or we have trusted copies on the laser everything website too that have corfile and the drivers included. DONT download ezcad from random websites. Because its old and out of date software, it flags antivirus softwares, and so it becomes a prime target for naughty people to bundle in bad stuff and host a bad copy of it. Get it from somewhere you trust.

[@customengraves]

Alex, I did these steps and it worked great with the accuracy of the laser. However, now my designs are rotated 90 degrees when engraved compared to what is showed on my computer screen. How do I fix the rotation so It engraves the same way as shown on the screen? Thank you!

[@LaserEverything]

When you performed your corfile correction it sounds like you skipped the "Change Image" setting. Make sure you use the "Change Image" button to get the marked sample file to match EXACTLY whats on screen or it can cause this issue.

[@CustomizeYoLife]

Hello question did you ever get this fixed ? If so do you mind walking though the steps? Please

[@customengraves]

​@@CustomizeYoLife In the video you can see Alex rotates his engraved material to match up with the shapes in the image. DO NOT ROTATE YOUR MATERIAL! Just keep pressing the "Change Image" button until everything matches. Otherwise the final output image may be rotated also.

[@customengraves]

@@LaserEverything I found the issue. At 7:25 in the video you can see Alex rotates his engraved material to match up with the shapes in the image. DO NOT ROTATE YOUR MATERIAL! Just keep pressing the "Change Image" button until everything matches. Otherwise the final output image may be rotated also.

[@customengraves]

That's what caused the rotation, But the easiest way to fix it is to just put an angle of 90 or -90 degrees in the f3 param to correct the rotation.

[@nickpoole583]

Just got an OMTech 50w fiber. I’m setting up everything in lightburn. Do I need to install EZCAD to perform this calibration?

[@LaserEverything]

Lightburn doesn't have a guide on doing the calibration for the lens manually but it's extremely tedious. Much easier to run corfile if at all possible

[@nickpoole583]

@@LaserEverything So just to clarify, I will need to install and set up my laser in EZCAD2, run the cor file and then import those settings into Lightburn. Just for context I have already imported the markcfg7 file to lightburn that was sent on the usb drive from the manufacturer.

[@Alonso-h3y]

I have a JPT 3w seal 355 uv laser, do you know if I should select IPG or SPI_G3? Great video thanks

[@miloslavpotucek5327]

helo, where i find parameter libraly on the disc ecad, thanks Mickey

[@LaserEverything]

The fiber parameter library is available on the Laser Everything website, as well as the community libraries.

[@otis_d]

Is there a way to Mark 25 point rectangle in CorFile? I have seen some videos of having that options in CorFile. I get the outside 300mm rectangle and 10mm rectangle with perfect dimensions, but in between, the lines are off by as much as 2mm.

[@LaserEverything]

depends on your corfile executable version. If you want to test out some different versions of the software check out the Ezcad CE download on our website at www.lasereverything.net/downloads it includes bunch of different corfile versions you can test out.

[@FernandoAguilera-k5i]

Great Video! The negate function is automatic when using the cor file, and so the x&y axis are in the reverse direction. Is there anyway around that?

[@FernandoAguilera-k5i]

If anyone runs into this problem you guys can adjust the angle. Mine was flipped 180 degrees so i turned it 180.

[@LaserEverything]

Good tip! You should (or used to) be able to negate manually in lightburn if the corfile has the orientation flipped, but if the corfile method gives any issue you can always do it via the lightburn utility now too and it will directly apply the calibration corrections. Keep on lasering!

[@FernandoAguilera-k5i]

@@LaserEverything Thank you! Love your videos, they have helped SO MUCH!

[@widget2k4]

is there any way of getting this to work on apple mac, i do not have a windows computer to use ezcad2 on

[@LaserEverything]

Not right now unfortunately, though it is currently in development last I heard. In the meantime you'll have to calibrate your corrections manually. We do it in ezcad in this video but you can follow the same process in lightburn: kzbin.info/www/bejne/fIu3aq2FpZ6Gopo

[@finalaccuracy7695]

It's amazing how many issues people have that would be solved just by doing this.

[@LaserEverything]

Agreed!

[@gunhappyie]

Hi Alex, Changned from Ezcad to LB for my fiber however my settings for the lense doesnt work correctly. I have manually caliberated scale but bulge etc is still out. is there going to be a awy in the future to do this in LB ?

[@LaserEverything]

I believe Jason is planning native lens corrections at some point in the future.

[@kapple5290]

Is there a way to use cor file if your laser is using inches instead of mm? I tried using the cor file and it messed up my lasers scale and proportions pretty badly.

[@LaserEverything]

Not that I have seen. I'd try to switch to metric if you can handle the transition. 99% of laser related stuff is done in metric and it offers a bit more precision over all. I'd rather do conversions for artwork and associated files than for the laser config.

[@nickpoole583]

I tried this test on black butcher paper and blue painters tape with my 50w fiber and got nada. I even amped the percent way up. I was able to runt he test on a scrap pierce of metal, but did I have something set up wrong or is the black masking tape that much different from the blue tape or black paper? Just curious for learning sake.

[@LaserEverything]

Odd with the black tape. Blue reflects a TON of 1064nm light so that's less surprising. You'd have to slow your scan speed down pretty low to get that to mark. The black tape though, that should be producing results. Very curious.

[@nickpoole583]

@@LaserEverything well it wasn’t tape it was butcher paper from my wife’s school and it had a slight sheen to it, so maybe that’s why 🤷🏻‍♂️

[@LaserEverything]

@@nickpoole583 Ah right right misread. Yeah it could be anything. People would be surprised how little it takes to reflect 1064.

[@rickbennett6714]

Hi Alex, great video! So helpful. So do you need to keep replicating the EZCAD app folder everytime you save a .cor file or can you just have the one program and load in the proper .cor file whenever you switch lenses? Thanks so much!

[@mikesanchez5955]

y outside squares are really messed up. The squares bow pretty bad. But even on the initial test they were bowed. Should I set my PARAM settings to default first?

[@LaserEverything]

Make sure you're using the corfile "Change Image" function so that your test mark matches the screen sample or your measurements wont translate correctly when you're finished.

[@paulriley5940]

Great video o followed it everything work great except 2 things its shows my field lens as 244mm should be 200mm and it engrave upside down.

[@LaserEverything]

The lens size printed on your lens is an approximation. Lens calibration shows the true size of the lens. It's engraving upside down because you didn't use the change image feature when measuring your points. Redo your calibration and make sure you use change image when prompted so that the symbols are in the correct orientation.

[@paulriley5940]

@@LaserEverything I give it another shot need to do this on my other fiber also thanks

[@MG_Sid]

Great job on this. Great idea to say from the number to center.. less confusing for people to think of it that way.

[@KnifeModders]

I just entered all my measurements for the 9 point rectangle and started the calibrate standard rectangle. It just lasered a triangle with some straight lines in a star shape. Any ideas?

[@LaserEverything]

Got back to ya on Discord KM :)

[@tonyleone2703]

So anytime you use a different lens, you have to use it in a separate EZcad version? I’m assuming using Adobe or Coreldraw makes no difference?

[@Mishka-Mishka]

Thanks. I have a trouble to transfer any Illustrator graphics to ezcad2. Do you have any tricks that actually works? Something complicated, like small size fonts or QA codes.

[@LaserEverything]

Join our discord server for better support on this topic Mishka. It can get really complicated really fast but if you send some artwork we can take a look and maybe point out some things to improve compatibility with ezcad: discord.gg/DGcnRDSX

[@Mishka-Mishka]

@@LaserEverything Thanks for reply. :) I know how to do it complicated already, though you know and can share some "magic way" .

[@bradouellette6558]

Does this work with Lightburn Galvo ?

[@LaserEverything]

Yes. Follow the steps exactly, generate the Corfile, and then import that into Lightburn.

[@imajeenyus42]

Hi! Excellent explanation as always. I've been running into some alignment issues with my larger 150mm lens and I'm going to have a shot at using the corfile. I had previously set it up using the field parameters, and it was "pretty darn good". However, I was attempting a double-sided PCB, where you mark and cut one side then flip it over, and the alignment wasn't spot on. I solved it by applying my own distortion correction beforehand (Rhino has a feature called "cage edit", where you can apply a grid of points over an object and then drag them to distort), but I'll need to take a look at the corfile. However, I have one major doubt with it, maybe you can clarify. If, when you're measuring the coordinates of each marked point, you're assuming that points 2,4,6,8 lie on their respective axes, then you're never going to be able to correct for any skew distortion. You could take that whole pattern, skew it slightly, and you would still have exactly the same measurements. Does that make sense? The only way to actually measure the points would be a travelling microscope, or a webcam on a mill/router, which is beyond what I can do!

[@markusw4715]

Seems that would not work for Ezcad 3 anymore, there is no corfile application anymore present.

[@sandritasice22]

buenas tardes, sera q calibre mal, ya q al hacer la puebra guardar los parametros e introducir, la medida de mi laser qda en 326? mm no en 300mm

[@LaserEverything]

No Español, lo siento

[@victoriavidal4041]

Can I do this in light burn or I have to do it in EZCAD then put into LB

[@sambond7703]

Thanks Alex, your video made this process so easy. Thank you for the time you took to make this video.

[@LaserEverything]

I'm really glad it helped you Sam!

[@MCHughes350]

Is there a way to do this in Lightburn if you have never used or acquired a copy of EZCad 2?

[@LongIslandHobbyist]

Hey Alex, I need to rotate my workspace 90° so I switched my x from galvo 2 to galvo 1 and hit negate which did what I needed it to do but then when I choose to use my corfile it switches the x axis back to galvo 2 and re rotating my sorjspace back to its original position. In the vid you said it doesn't read any galvo inversions so I did the corfiles with my params with x on galvo 2. Do I have to set the x to galvo 1 and then do my corfile? Sorry for the stupid question. Thanks in advance.

[@LaserEverything]

No stupid questions. Complete your corfile as usual. On the first page of your F3 Param in the Field settings you will see the options for Offset X, Offset Y and Angle. Simply set your Angle value to 90 degrees (or 270 degrees, depending on what's needed) and it will accomplish the same goal without fighting with the corfile settings or messing with the galvo mirrors.

[@LongIslandHobbyist]

@Laser Everything I actually had gotten it. I did swap my galvos first then ran it and it worked out for me. Thanks.

[@uniq.manufacturing]

Hey Alex, thank you for all your videos especially for the launch of Lightburn Galvo. I'm really excited to the correction with corfile, but I have one point I'm struggeling with: How do I set the lens size in the corfile settings? Or is afterwards the workspace different to the e.g. 175mm lens? Also to see in your video (Fieldsize: 185.87mm). Thanks for your additional explanation.

[@LaserEverything]

Yeah Roman we actually mention that in the video. The corfile will change the lens size based on the lens size it calculates. This is your true field size. There's no need to make any adjustments. The software is correct.

[@loloco321]

How can i made this process with option Galvo 2, because my drawing after the process are weird

[@LaserEverything]

Galvo 1 vs galvo 2 is only selecting which axis is acting as the X axis, so its the same process. The key thing when you do the corfile, is make sure the shapes and orientation match up 100% and its not getting flipped or inverted, because thats how corfile determines which axis is acting as X, and which direction is which on the servos for those mirrors. If they are turned, flipped, inverted, when using that corfile in software, things may burn in reverse, upside down, turned, all kinds of crazyness, but in short, all leads back to that main step of matching up the shape and orientation with the test burn.

[@steve-martin-42]

Alex, thanks for the video, just got a working COR file for EM Smart 1

[@LaserEverything]

Nice job Steve! Way to go!

[@billsouth2660]

Alex. Followed your example on my Cloudray 50 and all went well. Lens is a 150 and I did indeed have to rotate the reference grid to match my lazed grid. Now. However, now the output burn is inverted top to bottom and left to right. Looking at my f3 values the (and I don't remember the exact name of the boxes) the invert box is checked for both axis. I cleared the the check marks for both and hit the OK button. It always comes back to checked and my output remains inverted. Made for an ugly 1911 slide but my bad. Any Idea how to clear this issue.

[@LaserEverything]

Double check the step where you have to fix the reference grid. Pay special attention to the small dash in the center, not just the shapes in the corners. The shapes may be in the correct spot but if the long side or shot side of the dash in the center is swapped it will effect your inverted axis. Any changes you try to make to field distortion settings manually while you have a corfile selected will be overwritten by the corfile which is why your changes aren't saving.

[@billsouth2660]

@@LaserEverything Thanks. Started over from scratch and this time everything is good. Many thanks.

[@iammichaelwalker]

When i do this mine actually prints out the Test Grid Warped a bit, then when I do the measurements, the bigger multi Box pattern comes out quite warped! my previous comment was toward do you have to set field size, i see yours is at 100 even though for a175 lens? my lens is 110 i tried it on my 200 and same result.

[@LaserEverything]

Shouldn't make a difference, just used to make sure the test box actually fits inside your usable lens area. Don't test the lens using the test grid inside corfile. I've found it to be extremely inaccurate. Instead save your corfile, load it into ezcad and attempt to mark some different sized boxes once the corfile has been applied and see if that gives better results. That's what happens for me a lot.

[@iammichaelwalker]

@@LaserEverything I re did the 9 point test grid, appranrlty its ok if its warped, then i rate the Test Rectangle it came out alot better now, but a little warped on the left sides of those square grids, so you say don't go by that? as it is inaccurate? i thought those boxes should all come out straight, and measure out ok, my measure out ok, just that left sides as they go out in sequence further out more warp to it , has a slight warp to it.

[@tcurry1231]

How can this be done using Lightburn?

[@LaserEverything]

It can't. Currently you have to switch back to an ezcad installation to use a corfile generator, than swap back to lightburn to implement that generated file. We have videos on it in our LightBurn for Galvo crash course, check the channel page for the playlist link.

[@shoguncustoms]

So I'm not seeing that Core2 application in my EZCAD folder. Is this something I have to get somewhere?

[@LaserEverything]

If for some reason it isn't included with your copy, you can download a fresh copy from our website download.lasereverything.net/

[@elidelia2653]

How would I do this for LightBurn?

[@LaserEverything]

No native lens corrections in lightburn. Currently you'll import your existing cor file.

[@MarcCain_US]

I am using EZCAD3 and it doesn't seem to have come with Corfil - But it does have something called the calibration wizard - in Chinese. Any suggestions on where to download this?

[@bishoysoliman9117]

Hey Alex, may I mail you my question?

[@LaserEverything]

Please post on discord or our Facebook group!

[@deervalleyengravings3088]

Can this be done in Lightburn?

[@LaserEverything]

Not currently but I can confirm it's in development. For now you will have to use corfile.

[@deervalleyengravings3088]

@@LaserEverything so load up ezcad2 . Do cor application save it then load it into lightburn. Correct

[@LaserEverything]

Yep that's it.

[@rssacnavy]

I followed your tutorial yesterday and it worked great for EZcad2. I decided to try out Lightburn and downloaded that today and now I am having an issue where CorFile wot run anymore. Keep getting an error of "Failed to open lmc driver" Any idea what happened? Now i have to rerun the corfile and the red light pointer alignment all over again but can't get the corfile to work.

[@LaserEverything]

When you operate a galvo laser in lightburn, it uses its own driver for that software package. You would need to swap drivers back to the ezcad driver in order to use corfile. Check out our lightburn for galvo crash course playlist on the channel, it walks through it in steps and will help with the process if you want to give that a go. The error you're getting is just from being unable to connect due to the driver though, so quick fix! If you have a completed corfile, you can also just import it into lightburn in the device settings menu, unless its a new lens or something. That menu also has the red dot adjustment for the alignment.

[@1LoudCRX]

I measured exactly and my square curved out on the left and right and curved in on the top and bottom.

[@LaserEverything]

Do your corrections again and be sure to use the "change image function" to make sure the test mark is the same orientation as the mark shown on screen. If they don't match you'll run into issues.

[@mariettetedem2713]

I bought my 20w fiber laser from a company in china Leapion. I have this distortion issue. I looked at the video and looked for the file where i can fix this but i can't seem to find it. The software that came in with the machine doesn't have something written corefile. What can i do please? I've not been really able to use my machine because of this. Distortion makes all of my work look nasty and it is annoying. HELP PLEASE 🥺🥺

[@LaserEverything]

If your machine runs off of an Ezcad controller try downloading the CE Edition of ezcad and using that instead, you can get it off our downloads page at www.lasereverything.net/downloads

[@mariettetedem2713]

@@LaserEverything ok thanks. I've sent a demand to be admitted into the Facebook group but no aswer yet it's been more than two weeks already. Can you please admit me, i am really eager to learn more, your youtube videos are so helpful i'm sure i'll get all the help i need from the group. Name Tedem Mariette , please check

[@LaserEverything]

We don't have any pending invites to the FB group. If you didn't answer all of the questions your request is automatically declined. Try again and make sure you answer the membership questions.

[@iammichaelwalker]

you forgot to mention how to set lens size in Cor2 file?

[@jagaurbullion1204]

I do not have corfile2 in my EZcad directory. Anyone know where I can get it?

[@LaserEverything]

Its included in the ezcad 2 download on our website. Just download, extract and copy the corfile2 exe out of that folder and paste it into yours.

[@Well_Armed]

@@LaserEverything I tried that and when I double click Forfile2 a pop-up window says "Already have a EZCAD sof in running." No idea what to do now.

[@aashoj]

Hi Alex, just follow the proces and it work great, just one problem. Everything is turned 180dg. in text and 90dg. In direction. I Parameter i normaly use Galvo2=X, but after oploade file, I can't change to Galvo2, it is lock on Galvo1. Do you have any idea to solved these? Kim

[@LaserEverything]

Glad the video was helpful! For the error, This means that the early step of shape alignment physically to the software might have been skipped or inaccurate. That step is how the software determines the direction and orientation of the mirror motors and pairs it to the output of the software so it is corrected.

[@downloadjunkyadventures]

Big Thank You , as i was so lost , i have the Mopa 85cm tower JTP 60w fiber and had a 110mm lens so i swapped it out to a 300mm and set it up as instructed by seller , and my laser was now casting funky , watched your videos and finally seen this one and WOW that fixed the funky lens casting i now can work thanks so much.. Cheers from Blissfield New Brunswick Canada . ps i am now new sub. question you may no i tried lightburn but unfortunately it don't support my board so i have no auto focus , do you know of any upcoming support for these boards ?jcvfiber lmc4

[@jezzalinko]

i guess its refreshing that my cor file settings are exactly the same as what was already saved in the factory settings thought i would do it just to be sure but turns out it was correct anyway but i guess i have peace of mind from doing it

[@123bugness]

When I mark the 9 points, my laser isn't firing. OMTech 20w Fiber with 110mm 160FL lens. PWM@60Khz, Analog Out@20%. Any words of wisdom?

[@LaserEverything]

What material are you trying to mark for your test?

[@123bugness]

@@LaserEverything Paper, blue painter's tape.

[@LaserEverything]

Blue reflects 1064nm light really well. I'd bump the power way up.

[@ozziesoto2955]

Awesome keep producing these very useful videos.

[@LaserEverything]

Thanks, will do!

[@ozziesoto2955]

Follow your steps for 110mm lens. I got as close as I can. I have a problem my Galvo is on 2 and my image is upside down. Like it was on Galvo one. Do you know what it could be?

[@LaserEverything]

Check your F3 Param there's check boxes to invert each galvo near the distortion correction settings. One invert will flip x the other y. just select the right one and you'll be good to go.

[@d1gp2008]

I can not get this to work, I was going at this for almost 3 hrs last night bouncing between the grid and boxes and no mater what i did it never got better. please help

[@LaserEverything]

Load your completed cor file into ezcad and test in the actual software, rather than with the test squares in the corfile program which isn't always a good measure. If you tried that make sure you're using the "Change Image" function to make the on screen orientation of the symbols match what's actually being marked as that can cause this issue as well if missed.

[@d1gp2008]

@@LaserEverything I saved where I stoped last night I’ll load it up and try the post it note test to check. I definitely made sure the change image matched before starting

[@d1gp2008]

@@LaserEverything Quick thought and maybe this is off base, when running the stepped boxes check the final box is trying to print at 120mm on a 110 lens. Could possibly shrinking the size of the test grid make a difference?

[@nathanielscott6633]

When I press f3 it says running but it wont actually mark

[@LaserEverything]

Please join either our facebook group or discord server for advanced support and we'll take a look, links in the description.

[@secobaairways4585]

Can I use Lightburn for this rather than EZCad?

[@sidehop]

If you have EZCAD2 board then, yes. EZCAD3 board cannot.

[@ateeqcheemayoutube7163]

Red marking is not showing in this phone Ezcrd 2

[@LaserEverything]

Replied to your other comment!

[@xLycan004x]

Good video, your very helpful and do a great job.

[@LaserEverything]

Glad it was helpful!

[@xLycan004x]

@@LaserEverything Do you also have a video for calibrating a JCZ "G3 3D" galvo head? I gave up on the instructions JCZ provided for the :Z axis Cor" portion where it talks about the Focal Theory vs Focal Actual.

[@polakis1975]

Today i tuned my F210 140x140mm lens with this method. Great results. I was thinking if the first rectangular (banana shape on the edges😂) was big as possible then the error should be less in general. Mine, without messing with the slider was approx 120x120mm for a 140x140 lens. Should i make it bigger with the slider so the banana first shape will be bigger? If i tune my 300x300 lens, the box must be as close to 300, correct? Some other things i observed to master the process. Timing settings do matter in the first menu. If they are not the same as the machine (tuned already) the lines may not be accurate and may meet in different spots of the rectangular. The surface or material must be appropriate for clean (as thin as possible) marking and focus must be spot on in order for thin and clean lines. Caliper ends must be sharp and not damaged at all. Be extremely focused when measuring and putting the values. It is very easy to make a mistake. What i did? Step by step with you in the video😂 Something useful i saw but did not try is the option to open a correction file in the process and i believe you can make further changes in order not to start from scratch. Useful for fine tuning an existing lens running the test again but with previous settings as starting point. Another question. When changing lenses if you do not screw exactly the same amount of turns the lens, does it affect the previous tunings and thus the marking results? Again, congrats for the video and guidance.

[@LaserEverything]

Hey Polis great tips! All very important to remember. I have also successfully loaded a corfile to make edits and it 100% works no problem what-so-ever so that is nice as well. When changing lenses if you do not screw exactly the same amount every time there could be the tiniest of changes to your results but we're talking hundreths or thousandths of a millimeter which won't bother most people. One idea I had would be to screw the lens on nice and tight to the spacer and actually engrave a line (or mark a line with a dremel for example) between the two so that when you screw the lens on the two lines meet up. That's pretty extreme though and for 99% of people I don't think it's going to be a big enough difference to effect workflow.

[@polakis1975]

@@LaserEverything That’s exactly what i am planning to do. We are on the same boat of madness! I chase perfection as you realized. I have tuned my machine to achieve marking a character of 1mm tall and still visible! Useless but shows the detail i chase. About the size of the banana box? Should i push the size to be close to maximum work field of each lens in order to eliminate the error in smaller markings? I think you will agree

[@LaserEverything]

I always use the absolute smallest lens I can fit my project in.

[@Feelicks]

Why are my lines super curved on the edges. I did this and calibarted in, but I still have them very curved on the edges. Any help would be much appreciated.

[@LaserEverything]

Some lenses are a bit more touchy and troublesome to correct for (some just have more elaborate curve to correct for). Lenses work on a balance of extremes. If you correct for a value too small, the outer edges of the lens will not be accurate and the center may be over-corrected. If you correct for the extreme edge to be 100%, some lenses will stretch or cause defects at the center of the mark. It can also only be as accurate as the measurements provided, so take your time and double check those measurements and which box they belong in, just to be sure.

[@MarshallCNC]

Has anyone else had the problem of trying to run Cor file and McAfee deleting the file from the folder and putting it in quarantine? No matter what I try, when double clicking, the file is deleted from the folder so I can't run it. I've 'Restored' the file from McAfee back to original folder, but always deletes when trying to run.

[@MarshallCNC]

Fixed it ... for anyone running into this issue, I excluded that file from being scanned by McAfee

[@LaserEverything]

Good to have the fix, thanks for sharing!

[@ballegooijen2]

I like to be a member, but i see that it is only possible with a creditcard. But i don't have a creditcard

[@LaserEverything]

Annual membership's available with PayPal at www.lasereverything.net/shop

[@ballegooijen2]

@@LaserEverything Oke, thanks. BTW why is this $10,- more ?

[@LaserEverything]

It's more work to manage the manual PayPal accounts since it doesn't use the automated system.

[@xyzmetalwerx9897]

My mopa 60 watt won't fire on the 9 point.doesnt matter what power or freq I enter.

[@mitchelllorentz7630]

This isn’t working for me. The corfile won’t work

[@LaserEverything]

Please join either the Facebook Group or DIscord Server as this will take a fair bit of work to diagnose and KZbin comments aren't really built for trouble shooting. We have links to both in the description.

[@anthonyhishmeh9661]

This really helped, but when I did this it rotated everything I would light 90 degrees. I have no clue why

[@LaserEverything]

In F3 Param check to make sure you don't need to invert galvo 1 or galvo 2

[@anthonyhishmeh9661]

@@LaserEverything I ended up just putting an angle of -90 degrees in f3 param to contradict the rotation, it seemed to work.

[@LaserEverything]

Good work around.

[@dowayneloader3722]

@@LaserEverything Hi thanks for great video but if i change my galvo from 1 to 2 using the cor file it wont change. is anything else i can do.

[@LaserEverything]

Join the Discord, there's a link in the description it'll be easier to provide support there and we can take a look at your settings and see what's up

[@MrLuvtheUSA]

Awesome video 👍. Thank you so much!

[@LaserEverything]

Glad you liked it!

[@cristiansilva27]

thank you very much, you help me a lot

[@LaserEverything]

Glad I could help! It's a steep learning curve, but short, don't give up!

[@phantienhung93]

awesome thank you so much

[@LaserEverything]

Glad it helped!

[@camiscioni08]

This does not work with people using inches as their unit of measurement. As soon as you tell EZCAD to use a corrective file. It sets the field size to the value in MM not Inches no matter if you try to switch your units back to inches even after you apply the corrective file. Any fix for this? I really dont want to have to manually fix my lens distort 😅

[@LaserEverything]

Other than switching to metric, no, I don't believe so.

[@camiscioni08]

@LaserEverything no worries, thank you for the quick response!! You've been an insane amount of help

[@Larizzo1000]

Great Work!!!

[@LaserEverything]

Thank you! Cheers!

[@oninachi]

Very clear explanation and demonstration. Love it and have to say it =)

[@LaserEverything]

Thank you kindly!

[@davidemognaschi]

Very helpful!

[@LaserEverything]

Glad it was helpful!

[@DeannaDotson-j7c]

I completed this and now my images are not one to one. Please help!!

[@LaserEverything]

When doing lens correction, this adjusts for not just the warp introduced by the lens, but also the scale of the output compared to the software measurements, and also axis output orientation. It will only be as accurate as the measurements you provide back to it, and you need to be 100% sure you’re in focus. If you’re out of focus when doing the correction, the future output in focus will always be inaccurate. Same for doing in focus correct if you’re out of focus when marking. Check your focus, and if you’re spot on, You may need to try again with doing a correction, being sure you’re in focus every step and being as accurate as possible.

[@DeannaDotson-j7c]

I figured out that if I change the settings to MM, it is correct. If I change it to Inches, it is not one on one.@@LaserEverything

[@dtrofanchuk]

Super, thanks!

[@LaserEverything]

Thank you for watching! :)

[@AaronOlsen-pu6vn]

Thank you !

[@MrEdgas10]

I did erased ezcad once i got lightburn. To do this process do i have to install ezcad and drivers? Or is its possible just to run cor aplication?

[@MsUniquememories]

Exactly my question

[@MrEdgas10]

@@MsUniquememories you have to reinstall ezcad drivers in order to run corfile

[@francescoarome8838]

grazieee!!!!

[@LaserEverything]

;)

[@naengineer]

well this did not help me, I d k why

[@LaserEverything]

In some cases, its possible to have very little lens distortion and such, and that may make doing it have a minimal gain. That said, for most users, it is a substantial difference going from no correction to having a fully tuned correction done, particularly if you're leaving the center of the lens when marking. If you're seeing no change, but noticed a large amount of distortion or skew, its possible the cor file was saved, but didn't get applied in lightburn, or it was applied but didn't take affect. After you apply it within the device settings, you can confirm through the menu to be sure its saved your settings, and if you're not seeing a change when testing, then restart the software. Sometimes settings being modified in the device settings don't always show immediately until after restarting the software and reconnecting to the laser.

[@ateeqcheemayoutube7163]

Rate market show is not happening, if you have information about it, then make a video ...ezcrd2..

[@LaserEverything]

Watch the voltage testing video we recently put out so you can test your power supply, that will help you confirm your red laser power supply is actually getting power. If the power supply is fine, the red laser may be burnt out and need to be replaced.

[@mrs.lasereverything]

🥳

[@LaserEverything]

:D

[@JulietTangoCustoms]

Hi Alex, When i get to my CorFile2 I get a Failed to open lmc driver. I hit OK and the menu still pops up. Once I put in the Laser Params you stated and hit ok and try to hit Mark 9 points rectangle, the Corefile menu goes gray and doesnt respond. IF anyone knows a workaround that would be greatly appreciated

[@tigolbites87]

I have this same.problem right now and can't get an answer lol. If you got it let me know!

[@LaserEverything]

Sorry for the delay! This is typically due to a driver issue, or the software can't see the laser due to a communication issue (usb unplugged/cable issue/usb hub not passing good data/etc). Most often though, just driver isn't installed for ezcad. If you run into this issue, start by ensuring when you turn the laser on, that it appears as a connected device in device manager. If you installed lightburn's galvo drivers, then you will need to remove them to install ezcad's supported drivers. It can only work with 1 software at a time, and each have their own driver that isn't compatible with the other. Hope that helps!