sacrificial piece on table?

[Princy_cnc]

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

[Andrewg]

As you can see, the bigger ones do rather leave a mark, but perhaps yours is a little less powerful?
A few details of your set up might enable someone to be more helpful than me

Welcome to the forum

[Princy_cnc]

Hi Andrew
Oh I do hope I can do that with my 15W haha
OK, back to my question;
Should I put a sacrificial piece of wood or metal on the cnc-table (not the kitchen one) haha?
I have not run the device at 15w, rather I have it at 70% for the testing I've been doing.
Any comments on what the 15w laser can do? (at 70-80% or higher) Will it etch metal, glass, acrylic and tin?
Is there a list of what a potential 15w could possibly etch on?
I'm glad this is a light-hearted group.
Regards
princy_cnc