http://www.lasc.us/Fryxell_Book_Chapter_14_MakeHPMould.htm
I imagine you could machine a cutter in the shape of the bullet, oversize
for shrink and swage tolerances, then flute it into a cutter like making a
tap for threading, spin it in a mill and use the table to move your mold
halves held in the vise into the spinning cutter one at a time, using a stop
in the vise to index the halves to the same location so they line up just
right.
On Wed, Apr 27, 2011 at 4:30 PM, Donald Qualls <silent1@ix.netcom.com>wrote:
>
>
> 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.
>
>
--
Nick A
"You know what I wish? I wish that all the scum of the world had but a
single throat, and I had my hands about it..." Rorschach, 1975
"They that can give up essential liberty to obtain a little temporary safety
deserve neither liberty nor safety."- Benjamin Franklin, Historical Review
of Pennsylvania, 1759
"Suburbia is where the developer bulldozes out the trees, then names the
streets after them." Bill Vaughan
"The price of apathy towards public affairs is to be ruled by evil men."
Plato
[Non-text portions of this message have been removed]
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