Owner`s manual

or any other kind of adhesive on Delrin – few things stick to it. It can be welded with heat or
fastened with screws. Be very careful with Delrin. The vapors are very flammable,
bordering on explosive, and can catch fire with an almost invisible blue flame. Avoid
cutting very thin sections as these can catch fire.
c. Lexan (polycarbonate): Much stronger, more durable, and more flexible than acrylic, but
harder to cut. Edges tend to burn or yellow easily, making it difficult to get a clean cut. It‘s
difficult to cut this material thicker than ~1/8‖. Keep the protective sheet on both sides while
cutting, as this reduces yellowing of the non-cut portions.
d. Styrene: It burns easily and leaves a ridge on the edge. Flexible (not brittle), but not as strong
as other plastics.
e. Polyethylene Terephthalate PET (Mylar, clear plastic bottles): Similar mechanical properties
to polycarbonate, but edges cut a lot cleaner, though yellowing occurs near the edges – keep
the protective film on. Cannot be glued with acrylic glue.
f. ABS: Similar to acrylic but more durable.
g. HDPE: Durable but hard to cut over ~1/4‖
SPECIFICATIONS FOR THE LASER CUTTER:
1. Work space: 24‖ wide x 12‖ deep
2. Spot size (when focused): approximately 0.005‖ using the 2‖ FL lens
3. Depth of field: approximately +/- 0.1‖
4. Movement resolution of head: 0.001‖
5. Kerf (material removed during a cut): approximately +/- [0.003‖-0.006‖] ~(0.006‖- 0.012‖ total,
both sides)
Laser-Cutter Safety
When using your laser cutter:
1) Ensure that you have a readily accessible fire extinguisher.
2) Only use your laser cutter in a well-ventilated area.
3) Remember that cutting certain materials, such as PVC, can create toxic fumes.
4) Do leave a laser job unattended. Monitor the laser cutter until the job is finished.
Terms:
Kerf is the material removed during a cut: ~+/- [0.003‖ - 0.006‖] ~(0.006‖- 0.012‖ total, both sides).
The exit kerf will be slightly smaller (by 0.002‖-0.004‖) at the bottom than at the beam entrance for
thick plastic. This means the cut piece will be 0.002‖-0.004‖ larger at the bottom that the top. This
depends on the material property, thickness, and beam focus. For a slightly squarer cut, move the focus
point about a third of the way down from the top surface. This might require a slight increase in power and
could cause a slight rounding of the top edges of the kerf.