Been awhile since I've posted. Couldn't help myself when that black friday sale rolled around. Picked myself up an Acro mechanical set. Up to now my electronic set up of choice has been mach 3, a break out board, and dq542ma drivers. Running a laser cutter with Mach3 seems a bit spotty with work arounds, so i figured i'd give GRBL a shot with it's laser mode in v1.1. Was going to go uno and gshield but then I saw this SainSmart 2-in-1 RAMPs 1.4 Controller Board for 3D Printers As far as I can tell it's based off of the mega 2560 board. Would there be any issue with flashing the board with GRBL instead of the onboard Marlin?