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any size ammo cheap

Post about things you have launched or thought about launching. Also post about various materials used for building cannons. No posts about explosive projectiles!
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any size ammo cheap

Unread postAuthor: itsnotmyblood » Fri Aug 13, 2010 11:16 pm

take 86% water and 14% saw dust by weight mix it poor it in a mold freeze it. its called pykrete. look up a video i think it would be a good ammo


Mechanical properties Ice Concrete Pykrete
Crushing strength [MPa] 3.447 17.24 7.584
Tensile strength [MPa] 1.103 1.724 4.826
Density [kg/m³] 910 2500 980
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Unread postAuthor: hi » Sat Aug 14, 2010 12:08 am

Yup. I've never made it, but apparently it doesn't take much of it to make it bullet proof. Its very very strong and doesn't melt as fast as regular ice.
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"physics, gravity, and law enforcement are the only things that prevent me from operating at my full potential" - not sure, but i like the quote

you know you are not an engineer if you have to remind yourself "left loosy righty tighty"
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Unread postAuthor: SpudFarm » Sat Aug 14, 2010 2:28 am

I know for a fact that DYI used pykerete (If I ain't terribly misstaken) and he did it more then one time so I would think it worked out good.
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"Made in France"
- A spud gun insurance.
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Unread postAuthor: MrCrowley » Sat Aug 14, 2010 2:51 am

I actually made some today with newspaper instead. It is for reinforcing a projectile (soda can) :)
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Unread postAuthor: SpudFarm » Sat Aug 14, 2010 2:53 am

MrCrowley wrote: with newspaper instead.


Have you been watching Mythbusters lately? :D
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