[Drake Anthony] makes building a cutting laser from a PC look easy ... You’ll also need a focusing lens (just a few dollars), some thermal glue, an LM317, a resistor, and a pair of protective ...

The stepper controller is an Arduino Mega running the Marlaser firmware, though [Owen] admits perhaps a laser cutter-specific driver board would have been better as he spent many hours trying to ...

Available from stock for OEMs as well as for field replacement by end-users, Laser Research CO2 Focusing Lenses are available with A/R coatings providing less than 0.2% total absorption and with a ...