I have a 130W chinese laser and am trying to cut 1/4" cork on it. I run it at 80% (30mA) and 15 speed and results are variable. Ideally it would cut well enough that the pieces would fall out but that is rare and it is not uncommon for it to not cut all the way through. Depends on where in the field it is but it makes no sense to me. I have played around with the focal length and have tried to double cut (that does not work). Seems like if I go too slow it starts to char more. Could it make a big difference to put an additional air source on it (It already does have one).
Anyone have experience cutting thicker cork?