M3 M4 M5 screw cutting jig

thingiverse

I ended up with a ridiculously large quantity of 40mm M3 screws that I will undoubtedly never need again and I'm constantly running low on 20mm and 16mm screws, so I came up with this simple jig to cut the screws. I've created versions for M3, M4, and M5 screws, and I've also designed versions for cutting if you're left-handed (they are marked with an "L" in the file names). These hold the screw firmly and fit over the corner of a table or bench, so that the screw doesn't budge while cutting with a hand saw and you don't have to clamp the screws with a vise that might damage the threads.