[BProckets]
Terry McCreary
terry.mccreary at murraystate.edu
Tue Sep 28 11:26:10 PDT 2004
Point of clarification: Peregrin's book does NOT describe milling. He
uses the precipitation method instead. Big difference in procedure. I've
used his method for most of the comp I've prepared, so I'm not an authority
on milling.
Best regards -- terry
At 07:51 AM 9/28/2004 -0700, you wrote:
>Ok it looks like ill start with a 500g batch. Ill use Tom Perigrins book
>as a guid for the first batch. 1 question though. Do most of you make
>cakes out of the final milled BP? A lot of what ive read from verious
>posts do not mention cakeing the BP and then screening it but it is
>mentioned in many books.
>
>Potrocs at aol.com wrote:
>In a message dated 9/22/04 2:46:35 PM Central Daylight Time,
>terry.mccreary at murraystate.edu writes:
>
>
>
>>Hi Bill:
>>
>>"Too big" a batch is very situation-dependent, but the precipitation
>>method as described by Peregrin starts with a 500 g batch. Beyond
>>that... well, I don't know if I'd go beyond that for a first batch or two
>>or three or ten...
>>
>>Milling BP is a different matter, and I haven't milled enough to be an
>>authority. You may want to check with your local pyro group as they
>>probably have more expertise than I do. Or maybe someone else wants to
>>speak up....?
>>
>>Best -- terry
>
>
> >>>
>
>I've milled several hundred lbs, both for rocketry and BP firearms in my
>day. For media I purchased 3/4 round brass rod, cut em 3/4" long, and
>chamfered the edges. Using a 20 lb mill, I put 4 lbs of brass "pellets"
>into the drum with 12 lbs of chemicals, and mill for 6 hours, using a 2.5
>sulfur content.
>
>! BTW, do that outside, in a safe place..
>
>This will be my last post until Monday, I am leaving tomorrow morning to
>Denver to give my daughter away, which seems crazy considering how much
>she cost me ;-)
>
>......
>
>she's getting married BTW
>
>Have fun and be safe, get stoopid with BP and it can and will put a world
>of hurt on ya. Read David's book is what I'm saying, and pay attention..
>
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