Derek wrote:
I have a small HF lathe that my kid & I putz on, no high precission
work etc.

I'm keen to learn any tricks from the old masters regarding turning a
piece down to a specific diameter. For example, say you need to turn
a 10 mm rod down to 8.5 mm, are there any fancy compound slide angles
that equate closely to the dial, or do you guys just "shave and
measure"?

That fancy compound angle would be 5 3/4 degrees, where 10 thou movement
of the compound will equal 1 thou straight in.
This doesn't mean you can actually work in tenths of a thou, especially
on that machine! It only gives you a larger effective spacing between
thousandths graduations.
Woops, you're working in metric--same deal, it's a 10:1 ratio regardless.
If you can set the compound to half that, 2 7/8 degrees, you don't have
to think about doubling what you cut away to get the actual diameter.

Ken Grunke

--
take da "ma" offa dot com fer eemayl

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