After building some Laser engravers with small diode lasers i finally decided to buy one of these cheapo china 40W CO2 hellfire machines - knowing that they were dangerous in terms of bad electric, high voltages and powerful invisible laser rays.
As said, i knew of the existing problems but with my experience and some research i was confident to be able to deal with that.
K40 40W CO2 Laser Cutter from eBay i choose the orange one with the analog current meter, as i like the color and it was the cheapest ;_)
Once the machine was electrically secured, well grounded and unable to fire the laser with the lid opened i did some test cuts and started taking apart the whole thing to do the modifications i had in mind.
First Testcuts
First Engravings