On the topic of the Kevlar, I went and found someone who talked about its strength, and this is what they said:

Bulletproof vests are designed to stop BULLETS not knives. It might take a little bit more force to stab through one, but its not really that hard. Bulletproof vests are actually quite ...

wrapping it in kevlar might save you from an explosion, but it'd be cheaper to go with metal :wink:

Although kevlar is bullet proof, it's not rip proof. Kevlar is like a strong silk, it rips very easily. Denim is a much better option than kevlar, and that's been put out too :P

And thanks for all ...

Okay I've been looking at spud guns for years, and now I've finally overcome my explosion fears enough to make one, although my girlfriend doesn't approve :P I've got a few questions I have to sort out, sorry if they've already been asked before though.

I live in the middle of a large city, so ...