golfpro
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NitricSynth HE Salute
Who has ever made the digram on the 1o fingers club vid on youtube of the HE salute with the hand pressed ETN and the fuse wrapped in Al Foil? I was
thinking of doing a few of these (1-3 grams) or a bit bigger one away from people, but I don't have Visco fuse, (I do, but it's 30 years old and
doesn't burn hot enough) so I'd use some carmelized sugar/KNO3 strips smaller than a pencil in diameter, inside pressed ETN which is in the rocket
motor tubes, would this likely detonate at full speed?
the vid is here around 1:12, http://www.youtube.com/watch?v=6ux4SQQjOts
-I'd rather do the NPED one in the digramant to use aluminum tubing for it and it looks like I'd have to.
-I could just do a very small cap of HMTD pressed in an inch of rubber tubing, I made a few of these, but that is of course risky.
[Edited on 7-6-2013 by golfpro]
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CaliusOptimus
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The NPED is touchy. The burn rate of the Si/KNO3 mix is critical, and the type of Al used can make a big difference. Probably about half will go high
order. You might try adding something to the Si/KNO3 to slow the burn rate, it will keep the tube from melting if you use thin Al tubing. Fun to toy
with, but don't expect an old fashioned pri/sec type of reliability.
[Edited on 8-6-2013 by CaliusOptimus]
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golfpro
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Thanks, I also like the one titled "NitricSynth Approved Peroxide Detonator" I could do that one in plastic tubing, but I don't have the flash powder
to set off the 70/30 AN/HMTD. I think it is impossible to make an inorganic primary without ordering chemicals and/or having access to them that
others don't have, for example silver acetylide or lead azide.
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chemcam
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You are right, you need special reagents to make the safer primaries but still they are pretty common and can be made easily with the right
motivation.
What is the ideal primary you would like to experiment with? Azides are pretty much a no go for beginner unless you want to risk tearing apart an
airbag. Mercury fulminate is an easy one if you have the Hg.
Synthesizing energetics requires research and patience, they don't grow on trees for a reason.
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Fantasma4500
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Quote: Originally posted by CaliusOptimus  | The NPED is touchy. The burn rate of the Si/KNO3 mix is critical, and the type of Al used can make a big difference. Probably about half will go high
order. You might try adding something to the Si/KNO3 to slow the burn rate, it will keep the tube from melting if you use thin Al tubing. Fun to toy
with, but don't expect an old fashioned pri/sec type of reliability.
[Edited on 8-6-2013 by CaliusOptimus] |
if you manage to keep the ''primary'' which is in this case an explosive train being a secondary completely dry there should be no problem of a rocket
fuel initiating it
ive even heard about it being fully initiated by simple 2mm visco fuse (yes that would be complete luck and i agree on that) but using a rocket fuel
or something alike would make it very very likely if its put properly together and very thin metal pieces (alike aluminium foil) is used to properly
shockheat it all
of what ive heard as little as 0.5g shockheated etn was capable of fully initiating 62g ANSUAl not that it wouldnt work for even more
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golfpro
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I like those diagrams, too bad I don't have any silicon powder or aluminum powder, or I could easily do those NPED, watch the vid on youtube called
13g ETN, he made a cap replicating the digram of the NPED and thats what that was.
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CaliusOptimus
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I've talked to the guy that made the 13g ETN vid. He made a lot of those, but was never able to get very good reliability. I've also talked to the guy
that made the diagrams, and he claimed very high reliability. I'll bet if you really took the time to develop the design you could get something
fairly reliable. But no, just following the diagram isn't going to get you there. Several have tried.
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chemcam
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| Quote: Originally posted by golfpro | | I like those diagrams, too bad I don't have any silicon powder or aluminum powder, or I could easily do those NPED, watch the vid on youtube called
13g ETN, he made a cap replicating the digram of the NPED and thats what that was. |
You can get silicon powder at some welding shops, I don't know what it is there for but I have seen it at two different places.
There is a legitimate guy on eBay that gives a good deal on German dark Aluminum powder, $25/lb @ 1-3μ and that includes shipping. He does
discounts if you go above 3lbs. He also sells <1μ but it is much more expensive.
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Bot0nist
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Try rolling thunder pyrotechnics for GD aluminum. its like $16 IIRC, that was last year. just search it, I forgot the actual URL. Skylighter.com is
also a good sourse of both Al and Silicone. A bit higher priced though. They sell good visco BP fuse as well. pretty much your one stop NPED shop...
U.T.F.S.E. and learn the joys of autodidacticism!
Don't judge each day only by the harvest you reap, but also by the seeds you sow.
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