Hi all

Using as CNC LASER.

Should I have a sacrificial piece of ply on the tabletop, in case it burns?

I am currently just messing about, but do see burn marks on the aluminium.

Using screen cleaner and cloth does take this away and up to now, I can't find any marks which break the surface.

I just want to be on the safe side and not do any damage.

NOTE: I will be having one for the CNC ROUTER