PETG is a neat material, being food-safe, appealingly clear, and impact-resistant. It also has a reputation for being somewhat difficult to cut, as it melts and sticks to itself, not vaporizing as cleanly as acrylic. People also complain about white edges and raised edges. Still, many say you can laser cut it cleanly, and I have bought PETG laser-cut pieces that looked fine. So, let’s figure this out.
UPDATED settings for .060" PETG sheet
(actual thickness per calipers .070")
Compared to the previous setting of Speed 400, Power Full (Pro), Passes x2 this produces a slightly less polished edge, but a much better surface quality. Overall quality is adequate, but this stuff just isn’t as beautiful as acrylic.
Small or closely spaced cuts suffer badly. These melted cuts are 2.5 mm diameter circles. I cannot find any settings that would cut this test object successfully, including low power and 4x passes.
I’m probably giving up on cutting anything like the above, but PETG should still be useful for a more limited set of designs.