John - this was a fun paper board cutting from red and brown paperboard

John - this was a fun paper board cutting from red and brown paperboard that measures 0.3 mm thick. Can also cut thru cardboard from boxes using the 2w blue laser - just have to be happy with really slow feed rates at times. These are both L-Systems, which comes builtin with Inkscape render extension.

You’re turning your laser on/off via spindle on/off right? Did you rig up your own Arduino to control your LM317 and use that to enable/disable the laser? Can you possibly post schematics for that laser controller?

Ah, just a simple breadboard with a little reed relay http://www.radioshack.com/compact-5vdc-1a-spst-reed-relay/2750232.html and a standard lm317 current regulator.