Nick Andrews wrote:
> I was
> thinking boring out in lathe from two blocks of aluminum that are held in a
> 4-jaw with indexing pins and machined to work with common mold
> pliers/handles. Any ideas?
>
The classic method is to machine a "cherry" (like making a milling
cutter, reamer, etc.) in the final bullet shape plus sprue (plus
allowance for lead shrinkage, you'll have to look up the percentage),
spin that on a mill spindle or similar, and close the mold blank on to
the cherry (this is done with high precision, obviously, not by hand);
repeat once for each cavity. If you're making hollow points, you'll
then need to bore in the nose plug hole to fit your nose plug (which
should have a flange to prevent backing out).
Making the molds directly in the lathe is a problem because they need to
undercut; with most bullets, the sprue is placed at the nose, and
cutting the cavity internally with a boring bar would be difficult.
--
If, through hard work and perseverance, you finally get what you want,
it's probably a sign you weren't dreaming big enough.
Donald Qualls, aka The Silent Observer http://silent1.home.netcom.com
Opinions expressed are my own -- take them for what they're worth
and don't expect them to be perfect.
http://groups.yahoo.com/group/gingery_machines/app/peoplemap/view/map
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