17 years ago
I was given a small Stirling model engine to build for a birthday, and am
trying to get going on it. I have discovered (or rather re-discovered) that
I cannot file to save my life.
So I bought some round bar to file into a cube (I read this somewhere on the
net as an exercise in filing), but I can foresee that I will have a pile of
iron filings and nothing else before I manage to get even a single surface