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4hv.org :: Forums :: High Voltage
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Idea Feasability, thoughts wanted

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Spedy
Fri Jan 16 2009, 01:38AM Print
Spedy Registered Member #964 Joined: Wed Aug 22 2007, 12:39AM
Location: Stockton, CA
Posts: 134
I was wondering if designing an ETG-type Film-can cannon would be at all reasonable. Use some Camera Flash circuitry with a few extra caps to vaporize a piece of aluminum foil, with the shockwave propelling away the film can.

Would this even be possible? What would be potential problems?

Thanks
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rp181
Fri Jan 16 2009, 01:53AM
rp181 Registered Member #1062 Joined: Tue Oct 16 2007, 02:01AM
Location:
Posts: 1529
I actually tried making a simple one from a Epoxy Putty plastic tube as chamber, and pen tube as barrel. When fired, the Chamber blew up. You might be fine though, film canister is a bit thicker, more flexible, and i used ~800j :D.

Its really easy to make one out of PVC, and even metal. Mine is small metal union as chamber, plenty big. Look on website, Electrothermal Guns-ETG2. Website is in my sig.
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aonomus
Fri Jan 16 2009, 03:10AM
aonomus Registered Member #1497 Joined: Thu May 22 2008, 05:24AM
Location: Toronto, Ontario, Canada
Posts: 801
Just be careful with PVC pipe, it shatters. You could go with ABS (must be pressure rated) as it splits, or even better, HDPE...
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rp181
Fri Jan 16 2009, 03:48AM
rp181 Registered Member #1062 Joined: Tue Oct 16 2007, 02:01AM
Location:
Posts: 1529
Ive had PVC shatter, but it was when i put alot of water in it, so the pressure was forced to explode it (this was with 640PSI rated PVC!) I say stick with metal, i even used 1/2" copper pipe well.
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