Before I attempt the larger version, I laser cut smaller drafts (11x11cm) on 1/8" and 1/4" birch and it took about 4-5 passes on the 1/4" causing some of the the narrow lines to be lost. Just want to ask if there are any adjustments I can make to reduce the number of passes or if it’s typical to expect 4-5 passes to make a cut?
1/4" birch should cut with 2 passes at most. Often 1 pass is enough. Something must be wrong with your settings, focus, or the laser optics badly need cleaning or alignment.