Hi

I am dreaming of building a laser cutter able to cut through about 10mm of PMMA or similar. I have built several big 3D printers and a CNC for milling aluminium and feel confident about building a laser cutter, but I don´t know what to go for about the optics and tube and chiller and more. It would be great to buy a set of the head and mirrors and tube and lenses to start with.

As allways, the budget is tight (but not defined) so I am mainly looking to China for the parts.

Also, how do the chillers work? Is there just a basic radiator and a fan, or some more efficient phase transformation based tech (fridge style)?

If you have good experience on some parts I would appreciate your tips!

Thanks

-PropellerHat