Hi All

I've been running my homebrew plasma table for a couple of years now and I'm still really enjoying it, however, there looks like there could be a requirement to cut some 3mm birch ply.

What parts would I need to convert my plasma machine to a laser machine?
I've seen super fandangled cooling systems, power supplies, tubes and mirrors etc and I can't get my head around what is actually NEEDED.
I believe a 40w laser would do the task - can anyone confirm\reject this?
Should I decide to beef things up (laser wise) what is needed to cut say 6mm mdf? (in for a penny in for a pound!)

Any advice greatly received even if it is "don't bother buy a Chinese thingy"

ATB and many thanks

Danny