Kerfmaker revisited

This is a remix of ccrumpackers version. I printed his and found it to be too large, using too much plastic for my liking. I looked at others and they were all quite large, compared to the real McCoy!

I used m4 bolts, but had to trim the ends off them to make them fit. I could fix it in the design I guess, to use std sizes, but mine is made now!