I am new to CNC. I am using a CNC 3018 PRO with a 5.5 watt laser (driver GRBL) What (and which) are the best parameters to choose, what should I mark to cut 3mm birch plywood completely fairly quickly? I tried a speed of 400 mm/m in 6 loops, but it didn’t work. Are there any special settings for …

Too much speed try 200 full power 3 passes, and overall you have to use airassist

[image] killrob: you have to use airassist Where i can find this option?

Additionally I’d advise that you’ve chosen a fairly challenging material and operation (cutting) as a beginner with a relatively low power diode laser. You’ll need to have a number of factors fairly dialed in to get a quality cut including: material holding - you’ll need to ensure that you can ho…

[image] berainlb: I’ve seen some people with very tuned diode systems cutting through plywood > 10mm in 1 or 2 passes. Please link those cause i think their diode is about 15W in output, with my 7.5W diode i can cut 8mm of Solid wood, not ply, in about 9 or 10 passes

This is not an option this is a mod that blows air directly over the laser beam on the Surface you are cutting.

I misremembered some of the numbers but check out this video. Some of the ones I found impressive: 10 mm ply in 10 passes (not 1-2 as I stated) 6 mm ply in 2 passes 3 mm ply in 1 pass Cutting 10mm plywood with low budget Laser cutter - YouTube [image] killrob: 8mm of Solid wood, not ply, in…

Here is a little work done [image] My creation with a DIY diode laser machine Finished Creations This is a key holder for rooms farmhouse. 7.5mm wood done with the 50W Neje laser module at 160mm/m, 100%power, 9 pass. [IMG_20210908_185741]

Nice. Is that straight off the laser or has that been post-processed at all?

No post Processing, you see it as i took it off the laser :wink:

[image] berainlb: air assist - as @killrob has indicated this is really important for cutting operations especially. This is probably the single biggest factor in getting clean burns (ie less scorching). The importance of this goes up the deeper you try to cut. What compressor do you recommen…

Best parameter for cut 3mm birch plywood

LightBurn Software Questions

killrob (roberto ceccherini) November 26, 2021, 3:55pm 8

Here is a little work done