I modified these from a free file I found on the web. I created two files (Metric and Imperial), however you could print just one file and engrave the values for the other on the back.
Since I used florescent green acrylic (I really love this color!), I couldn’t do it on both sides since the text can be seen through it…
One thing I’m wondering–do the gauge holes take into account kerf? That is, for the 1/2" hole did you specify a 1/2" circle, or did you create a circle that would be 1/2" after the part of acrylic that is vaporized is taken into account? Probably for the larger drill sizes it’s not enough to make a difference, but I’m thinking the really tiny sizes might be off if kerf is not accounted for.
There was kerf compensation in the original file, but I didn’t do it. I did check the 1/2” hole with my digital calipers and it looked good (.5070)…the hole defined in the file was actually .377
I can’t say for the smaller holes as I haven’t pulled out my drill bits yet…
Did the standard, ( imperial). Came out great,sized the holes with my bits and they were accurate and tight. The only problem I saw, was the 11/32 and 21/64th labels were reversed (transposed). The 11/32 was on the 21/64 the, and vice versa. Not a problem to fix. Love this, great job!