We’ve had our GF for about a week and a half, and as we’ve been experimenting with designs and materials, we have discovered that it doesn’t cut square corners. I tried to make a simple box last week and couldn’t assemble it correctly because the corners weren’t square. I chalked that up to my own error, but I was going to do double-sided engraving on a piece this morning but I can’t flip it over because the outer square that I cut isn’t actually square.
To test it I drew a perfect 3.5 inch square in Illustrator and uploaded it as an SVG. Below is the shape that got cut. If it were perfectly square you could flip it over or turn it 90º and it would still fit in the hole, but it isn’t, so it doesn’t. As near as I can measure using my digital protractor, the corners are, clockwise from the top left, 88.35º, 91.05º, 89.25º and 90.55º. I can flip it from top to bottom in the hole, but not from left to right.
I thought maybe somehow it had something to do with the camera fisheye problem, but I get the same results whether I cut the shape off to the side or right in the center of a piece of proofgrade draftboard. I get the same problem in proofgrade acrylic. And the non-square box I couldn’t assemble was cut from proofgrade plywood.
Below are some photos. Any ideas?