I needed to engrave a number of assembled parts which were too deep to fit beneath my laser nozzle. The solution would be a time consuming disassembly and re-assembly of the items or modification to my laser lens system.
As the combined mirror / lens assemblies (usually fitted to the commercial laser machines) are cheap to buy (from China) I decided to give it a try. Making a small bracket to fit the new mirror / lens assembly to the machine (in place of the existing lens assembly) replacing my vertical laser beam with a horizontal laser beam and creating a new Mach3 profile to swap the Z axis with the Y axis everything worked beautifully.
There are safety issues with having a horizontal laser beam on an open frame machine and I have not yet worked out the best / most foolproof solution but I am working on it.
Tweakie.