Fixing the Problem with Diode Laser Cutters - Ortur LM3

[@jeffreycutler7364]

Very informative and well illustrated. Forgive me if you already know this, but you should do your interior cuts first on those gears and the outside cut last, otherwise you might get a small shift, and since we're talking .01 -.-02 mm you are probably concerned about that. Thanks for all your great content!

[@roTechnic]

That’s a very good point, thank you

[@Gee-Dee-q1e]

Thanks for yet another piece of great content. very informative and to the point. Although I'm enamored by your robotics, you're teaching me about proper 3d printing as well. :)

[@crackwitz]

the laser point oval might not be "upright" either, but rotated. that's trickier to estimate. you'd wanna cut an entire circle and measure that along several axes. or cut a polygon (octagon, ...), which might be easier to measure because the sides are easy to tell and label.

[@roTechnic]

luckily mine seems upright from the unfocused dot. but the polygon is a great idea!

[@brob1232]

Saw this video a long time ago and found it remarkably in programming and in insightful meaning - thanks a lot for your effort and sharing it to us

[@dinoscheidt]

Very well explained. Crazy to go the extra mile and roll it into a package. Well done.

[@curious_ben]

I don't own a laser cutter, but enjoyed watching your workaround. thanks for sharing :)

[@jankykerle9256]

4:57 did you mean 100 mm/min?

[@ironichoneybadger5066]

I had a question about cycloidal gearboxes, in my try given your video "designing a cycloidal drive in python and fusion 360", I can't get the roller carrier arms (the part that makes up the output shaft) to always be touching the space set in the planetary gear that holds the rollers, what are some resources on modelling that final piece?

[@roTechnic]

um, I don’t know of any resources, I worked it out from 1st principles in that video. feel free to email me a more detailed question and attach your model and I’ll take a look for you

[@ironichoneybadger5066]

@@roTechnic I’ll be sure to! I’m a bit busy with school, but I’ll get to you about it soon

[@jack_sparrow1049]

There is a quite lot of math's involved. 👍

[@roTechnic]

Yup 😎

[@stellanhaglund601]

How thick delrin would you say you are able to cut with that quality using that laser?

[@norbertbusch3942]

have same question - need 20m thick (but surface must not be perfect)

[@jsal92]

That's cool! How are you handling the fumes extraction?

[@roTechnic]

Currently it is by an open window with a fan blowing over it, but now I know it is accurate enough for "real work", I'm going to make an enclosure for it with fume extraction

[@jsal92]

@@roTechnic good to know you're taking it seriously! I'd suggest you watch Maker's Muse videos on lasers and proper use as well as materials! Stay safe and keep making 🤘

[@norbertbusch3942]

Have you ever tested 20m Delrin/POM?

[@PhG1961]

Great ingenuity !

[@roTechnic]

Thanks Philip!

[@tonyalvarez3685]

I tried to do the same as you, but I didn't understand everything. How to create a corrected svg with python 3. If you can help me that would be great. Greetings

[@janbacka5632]

Hi.. I own OLM3, with Ortur air compressor, and still have problem with cutting.. Working area is 400x800mm. I make sure that the focus is correct, lens are clean, speed and power are correct.. And especially when I do bigger projects, something cut properly, something not.. Smaller projects usually cut ok, but something bigger I have many places, that did not cut through.. Any advice, I start thinking, that I bought defect modul.. Tanx..

[@roTechnic]

Are you making sure the wood you are cutting through is completely flat? I found that the LM3 has a very short focal range and if the wood bows up then it won't cut it properly. I also found that it is more likely to cut through everything if you take multiple passes at a higher speed instead of 1 at a low speed. So instead of doing 1 pass at 100mm/s do 2 passes at 55mm/s Hope this helps

[@janbacka5632]

@@roTechnic I thought could be focus range.. Usually I work with plywood, which seems flat, but the heat from laser bow some parts up.. Honestly I had better results, when I set the laser modul 1mm higher, than should be.. I'w tried more passes, but then the plywood gets burned on some places.. But tanx for advise, I will focus on the focus range.. 😉

[@Alexander_Meyer]

You have such good content!

[@emipop21]

You sir....aaare remarkable!!!

[@roTechnic]

Thank you

[@droko9]

These machines are particularly dangerous because they are not fully enclosed. The gasses generated during cutting are bad enough, but stray unconstrained lasers are exceptionally bad. Imagine the laser shooting out of the machine, reflecting off your metal stand and hitting someone's eye. I'm suprised they are even legal to buy

[@roTechnic]

Completely agree with you. They need an enclosure, but there’s enough videos on KZbin about the safety of laser cutters so I thought I’d cover another area

[@alexon2010]

Que sesancional explicação, muito show uma pena que eu ainda não tenho uma máquina desta.... muito show.... não esquecce da minha mensagem que passei em outro video fabricar uma cremalheira + engrenagem 3 pinos com a ideia de cycloidal....

[@paradiselost9946]

i chose the semi-cylindrical lens approach instead. youre still removing all that extra material with the ellipse. and the smaller the dot, the more power in it... then i found out about the ... astigmatic prisms. lens is cheaper. harder to align. i dont recommend unless you really can deal with optic mount precision...

[@aronseptianto8142]

ngl tho, the eye protection on those machine looks sketchy

[@roTechnic]

Definitely. You need an enclosure for these things

[@coolhairstyle]

Is there not an easier way to do this? For people who know nothing about anything. Is there not a "Laser dot size compensation" switch in lightburn that you can toggle and fix this problem? I Understand the theory of what you did in your video but I have no idea of how you actually did it. I know nothing about python or anything like that. How can an ignorant noob accomplish what you accomplished ie: round circles.

[@MarinusMakesStuff]

Ten times cheaper than the therapy you need when you turn blind by one of these cheap hobby lasers. Machines like these should not be operated by hobbyists. I work with lasers on a daily basis and know the dangers. It's fumes, it's the laser itself, it's it not being a fully enclosed system... I've messed around with lasers back in the days and looking back, I was so stupid. It's just super unsafe. I hope this trend of letting youtubers review hobbyist lasers disappears soon.

[@roTechnic]

Yeah, I can't help but agree with you on your points. This thing need an enclosure with real protection and fume extraction. I'll be doing that before I use it again. But I thought there were enough videos on enclosures and wanted to cover a different topic.