Is that the code I sent you John.? Do you have to alter it in anyway other than feed rate for laser work or can you use G-code done for wood,metal etc.?
Never looked at laser before but recently I've thought to build a higher powered 80-100W machine.! . . . .Mind by the time I've got spare time to do it we'll be using nano bots to atomize the material away at light speed feedrates. . .Lol