I had to Explain this to my wife the other day, then I realized I’ve never heard of anyone talking about this on the forums.
In a nutshell; Don’t throw out your broken drill bits. Especially the smaller ones.
Why? Have you ever made your own marking gauges? What are you using for the pin or cutter?
A nail will work….. but a sharpened bit of drill rod will work better!
My wood lathe copy device came with a crappy (soft) cutter. Which just happened to be shaped from 1/4” diameter rod, exactly, not almost 1/4”. In my broken bit’s there was a piece of 1/4” just long enough. some careful grinding and I was good to go.
So keep a little container to drop any stubs you end up with into. and when you need a little piece of good steel there it will be ready and waiting.
be well, count your finger
-- Kai SaerPren