[BProckets]

[mrgizmo]

I mill mine in 500gm batches and get 4 G-75 motors out of it.
  ----- Original Message ----- 
  From: Potrocs at aol.com 
  To: bprockets at amateurrocketry.com 
  Sent: Wednesday, September 22, 2004 3:47 PM
  Subject: Re: [BProckets] 


  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..

  Pat G 


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