Mirror Alignment: The Key to Unlocking Laser Cutting Precision

Feel free to help me out and buy me a coffee.
www.buymeacoff...
Having trouble aligning your laser cutter/ engraver?
Watch a full guide on how to align your lasers mirrors to get perfect cuts. Once you have watched the full video you should be able to align your own machine in minutes.
This was done on a Chinese K40 machine.
Any questions or comments, let me know and I'll get back to you as soon as I can.
No special tools required. Just your eyes, and some masking tape and a screwdriver.

[@khadijadaw]

Thank you! I went through about 5 other videos and countless hours without success! My machine arrived with broken stabilizer bars and no 3rd mirror, and completely uncalibrated. The washers tip helped tremendously. Truly appreciated!

[@MARCAM]

Very welcome! Glad it helped. Such a shame with the way it arrived though! Hope they compensated you for the broken parts

[@randybaddy5168]

Best alignment video I’ve seen. Saved me a lot of time. I’ve had mine a year and have always been slightly off. This helped so much

[@MARCAM]

Thank you 😊 and glad it helped. Best get to some cutting now 😉

[@randybaddy5168]

@@MARCAMtop right shoots a little high, the other 3 corners are spot on. Does this mean it’s the gantry? Also after cleaning and realigning everything, I get waves in my raster? And left to right cut is wavy. No help on the forums?

[@MARCAM]

Same with mine. It’s impossible to get it exactly right. I’ve just got it as close as I can moving the mirror with tiny movements till it’s as close as it can be. It may be the gantry, but mine works fine like it. It could be something is a bit loose. Maybe a mirror vibrating, the lens or could even be a belt. Just go over everything and make sure everything is all tight

[@brandonturner7481]

Thank You! this saved my brand new k40 from an early demise. That was so frustrating. Glad I found this video... Now it is spot on.

[@MARCAM]

Glad it helped :)

[@AhmedSara22]

Really helpful. By mistake I change the lens backward next to the laser tube but thanks to your video I was able to fix it

[@MARCAM]

Amazing! Glad it helped 😊

[@MileyonDisney]

This was very helpful. Thanks!

[@MARCAM]

Glad it helped 😊

[@binshotalot]

Good in depth video, all in real time.

[@MARCAM]

Thank you. Think it helps to learn when you watch something in real time with the least amount of cuts possible

[@Never-mind]

Hey Marc! I will try to adjust my mirrors with your tutorial! Can not to fix it few days already..(

[@MARCAM]

Hopefully it will help. I’ve tried to make it as simple to follow as possible. Once you understand about moving the mirror brackets it makes it so much easier :)

[@waynebutcher8037]

Great stuff thanks for this video watched loads and this was only one where I got a perfect result thanks loads one very frustrated k40 user 👍

[@MARCAM]

Thanks for the feedback :) I was in the same boat when I first got mine

[@waynebutcher8037]

@@MARCAM it's awful isn't it lol you made it so easy and I will always remember how to do it now lmao been at it for weeks with not bad results but never could get it centered but now I can 😀 thank you again

[@MARCAM]

Good, glad to hear. And you’re very welcome 👍🏻

[@EandY_Videos]

Thanks very helpful video!

[@Gvozden73]

Good tutorial for aligning, but have one question. Mine k40 have like wobble in that small plastic wheels. And than head with carriage is like going up and down( like loose play) . If you get me, small bearings in wheels tend to "pop" out and than you got uneven head position. Am going crazy to fix all right. I could do it like that with washers but there is no1 here to compare that wheels. Dont know what to do, cant cut 3mm plywood at all.

[@bishnupatra3179]

Good advise sir from india

[@arfianto487]

Thanks .... I will try it..im wasting 2 days and still not working 😬

[@MARCAM]

Hopefully it will help you :) just remember to take your time with it

[@arfianto487]

@@MARCAM It works....thank you. Subscribe Done!

[@MARCAM]

Good I’m glad 😊 and thank you 👌🏻

[@dineshbansal8356]

Hi bro, I recently brought this k40 laser machine , and i am facing one problem, the machine is only cutting in straight line i.e y axis…would it be because of the incorrect mirror alinement??? Could you please help me out

[@MARCAM]

Does the gantry move in both axis okay?

[@dineshbansal8356]

@@MARCAM thank you for replying back my message….yes ,i can move the gantry by myself….when the machine is off…when i give it a command and close the lid …the gantry only works in vertical direction …i.e towards me and back ….not horizontally

[@MARCAM]

Stepper motor could have a loose connection maybe. Check the wiring and see if you can wiggle the stepper motor cable out and back in. Check the same on the board too. Could be either end

[@martindedera6242]

Ahoj. Já mám problém se zadním pravím rohem. všechny rohy mám ve středu a jen zadní praví střílí paprsek uplně mimo. už si nevím rady. poradíš mi? Díky

[@MARCAM]

I find with mine that if the all 3 are perfectly aligned the mm the top right will always be a little out. I get both top and bottom about the same so it’s not exactly perfect but doesn’t give me any problems. If you’ve tried that and can’t get it then it might be a case that your gantry could be slightly out of square. In that case I’d align the top right rather than the bottom right as you’ll find you’ll use the top more to cut than the bottom

[@martindedera6242]

@@MARCAM díky moc za radu 👍

[@Cellgm2000]

what thickness & wood is that please?

[@MARCAM]

3mm birch ply

[@Cellgm2000]

@@MARCAM is it only my stupid retail shop that stocks ... 3.6mm 4.6mm 5.6mm whats with the .6 =/ haha,.

[@MARCAM]

😂 yeah I’ve never had a problem w it h 3mm. To be fair the first batch I got was off Amazon. After all the prices went up I found a guy who sells his off-cuts to me and it’s dirt cheap. A4 3mm ply and cuts like butter

[@Cellgm2000]

@@MARCAM care to share his info ? haha

[@MARCAM]

Yeah of course. Check my profile about. There should be an email address. Email me and I’ll send you his details 👍🏻