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rr22

Member Since 15 Nov 2007
Offline Last Active Dec 26 2016 07:22 PM
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Topics I've Started

Always use cardboard tubes...

19 July 2009 - 10:05 PM

http://www.yorkshire...pipe.4537402.jp

"He may have had too much time on his hands."

He certainly has now!

Mods. please move this to the legal section if it's more suited.

Living history & pyro.

05 June 2009 - 09:26 PM

Came across these topical links:

http://www.timesonli...icle6432946.ece




Do we have any members involved ?

Dragons eggs "event"

15 October 2008 - 11:36 PM

I was making a 50g batch of these,using the formula;

Bismuth trioxide Dragon eggs Bismuth trioxide or Bismuth subcarbonate 75 Magnalium (-200 mesh) 15 Copper (II) oxide (black) 10 Aluminium (atomized, -200 mesh) +5 Nitrocellulose lacquer 10%

and method from Pyroguide,as I was cutting the rolled out mix on polythene using a scalpel I heard a distintive "crack" I drowned the comp in acetone,and sought advice, (thanks Cooperman).
I think that what happened was some chunks(about 1/4") of Bismuth trioxide got into the mix,and caused a small area of dry comp. that ignited from friction.
Some on passfire speculated that this was just mechanical noise but a sub .01g particle replicates the noise I heard exactly,and it's a pretty unique sound.
In my final analysis I think this boils down to my bad technique(not screening the Bismuth trioxide),but hopefully interesting/instructive.

Perchlorate disposal

19 April 2008 - 06:34 PM

I have a small amount of Perchlorate I want to dispose of but not by burning,
Is there an easy way to render it safe?