Built the enclosure, and hooked up fume extraction and air assist…
This is cutting 1/8″ plastic – everything seems to work just fine – 3 passes and the pieces just drop right out. The cutting residue washes off with soap and water.
UPDATE : I was looking for tips on identifying laser safe plastics and found the following video:
Polymer Identification by Burnination from Zach 'Iowa' Hoeken on Vimeo.
…and this technique can also be used to identify if you’ve been taken over by “The Thing”.
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Steve Hobley works for a software company, but in his spare time likes to deconstruct all the lovely consumer goods with a goal to make unique and interesting things.
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I eventually cut a hole in my roof for the smoke exhaust!
Check this out: http://www.heyokasolutions.com/Black_roof_mounted_exhaust_vent_p/prmx-rv2825.htm