A little info on my laser. Its a 60watt Chinese laser, RUIDA RDC6442G controller, chiller that keeps temp at 68 degrees, upgraded air assist to run at about 10-15 psi. Also has good venting with a blower.
I installed a Milliamp Gauge, and my tube threshold is 18 which the gauge shows it hits at the 43% power mark. Mirrors are all cleaned and seem to be aligned when I did a most recent test. Lens I have used an the stock one that came with it and also just added a fresh new 2 inch lens.
The laser has always struggled to cut 1/4 birch plywood. 1/8 has never been an issue and up to this point I just stayed away from 1/4 as much as possible… but I would really like to start working with it. 1/8 cuts at 10mm/s at 43% power, both min and max power is set to the same number. 1/4 I tried to slow it down a bit more(8mm/s) and do 2 passes and there are still always parts of the wood that is attached. I even raised the material closer to the lens which I saw in a youtube video, but no luck. There is the odd time with small test pieces it will cut 1/4, but then when I apply those same settings to a regular project it doesn’t work.
Is there anything that anyone can recommend me try that might help with this? Any settings or something I am missing? Any input or potential things to try is greatly appreciated!