I have a silk-screen print on a square sheet of paper. The corners of the printed area are arcs with about a one inch radius.
I would like to cut a beveled mat for this print with the opening about a half inch larger than the print area, but I cannot come up with a way to cut the corners.
If I were making a non-beveled mat, I would use a compass with a blade to make the cut, probably making multiple cuts to make it all the way through the mat. I would cut the arcs first, then join them with straight cuts.
One way to do the beveled arc would be freehand, following a drawn curve, but I know that I don't have the steadiness to pull this off, certainly not so that all four corners would be identical.
Another way would be to use a compass as mentioned above, and arrange the swing leg so that it doubles back to cut at a 45 degree angle, but for it to work it would have to be done in one pass. (If done in multiple passes, each pass would be a slightly different angle, or some magic adjustment would have to be made for each pass.)
For the straight cuts, I have a Logan beveled mat cutter. (in the old days I just made multiple cuts holding the knife a 45 degree angle - of course being freehand after the first pass, each cut was at a slightly different angle from the previous and the results were not always pretty.)
I am hoping there is some way to cut the corner arcs with a device that would produce clean bevels like I get from my straight line bevel cutter.
Does someone know how to do this?