I am looking for ideas on how to reduce burn marks on birch plywood,
during cutting a flame appears which is pulled by the air extractor leaving
burn marks on the wood.
Lowering the current or increasing the speed prevents a flame from appearing but then the laser is not strong enough to cut properly.
i integrated a tube taped to the air outlet on one end with the other end on
the opposite side of engraving space facing the outlet.
i thought this would make the flame stand up and not be pulled in one direction,but the tubing outlet had no effect.
im wondering if some sort of tape over the wood might work or even lightly wetting the wood!!,?,