Winston wrote:

Grant Erwin wrote:

Winston wrote:

Grant Erwin wrote:

(Snip)



...Sure enough, when I read it like the problem came from someone
else,
laid out clearly just the way I like it, the solution immediately
came
to me!

After I have accurate answers for 'Who', 'What', 'Where', 'Why', 'When'
and 'How Much', a solution generally pops right out. It takes discipline
to step away from the problem to do the homework, though.

Are you going to share the problem and solution?

Oh, the problem isn't much. The fixed jaw on the chuck on my little die
filer was boogered, so it wasn't possible to chuck a file so it was
parallel to the axis of the file rod. Probably improperly hardened
followed
by many years of cranking a hardened file in there. Anyway, I figured I'd
machine off about 1/16" accurately (either by milling or grinding) and
then
make up a hardened and ground shim which would lay against the fixed jaw
and allow correct clamping of a file. I was trying to figure out how to
accurately remove and replace hardened material, that's where I got
stuck.

Grant


Interesting problem. My first guess involved a lot of repeated operations.

How did you solve it?

I haven't yet. I'm going to do what I came up with above, i.e. grind away
a bit of the fixed jaw and make up a hardened shim to replace it. The shim
will be held securely in place by the movable jaw of the chuck. This may not
work well for some reason as yet unknown, and I may just make an entire new
file rod which is bored at the end to receive 3/8" round file shanks, and
then make up 3/8" round shanks for my parallel files, using the method
described by Andy Lofquist with his MLA die filers.

Grant