In this episode we will test the eBay Chinese CO2 Laser Cutter & Engraver as well as align the mirrors. However a word of warning as when I fired this up the mirrors where so far out of alignment that they were firing outside the enclosure! This is high risk folks, so:
Ensure you are wearing the appropriate safety glasses for your laser
The room is clear of other people and pets
The laser is set on a low power setting
Keep a fire extinguisher handy
On my laser, the laser tube will fire as long as you hold the button down so be aware of this too as at a low setting you may have to hold the button for a few seconds to mark the paper. Also note, some paper burst into flames very quick so keep a fire extinguisher handy just in case!