I am interested in cutting the smallest diameter pinhole possible. I tend to use OmniGraffle on the Mac for my design work. I’ve created a zero length line and the Glowforge says that there are no graphics in the file. From there I tried to make a small diameter circle. I made the smallest diameter circle possible in OmniGraffle and cut the attached hole. (Proofgrade thick clear acrylic). Note that the hole is not symmetrical. My sense is that the system is actually cutting a tiny circle and hitting the end of the arc at the same location as the start of the arc and therefore cutting a little bit extra. I’m going to try reducing the arc length (270° instead of 360°). I’m wondering if anyone can tell me a way to make a true pinhole without using a circle?