i thought he did, it looks like his garage from the pictures i've seen of it

you need National Pipe Thread or NPT yes, but they wont have that in metric.

I think Joel said it was a bit of kerosene in the barrel.

haha, just jokin man, i do that to freshmen in my shop class all the time, ask them for a left handed screw driver and they come back five minutes later saying there isnt one in there

its a joke, theres no such thing as a left handed pipe wrench since the pipe wrench can be used either way, same with the ball valve

And Joel's is a shitload bigger and safer, this one's just got a few cosmetic things added to it, Joel could always do that with his cannons as well...

yes it does matter, and make sure you use a left handed pipe wrench to tighten it

Hah, thats one of joel's rifled clear PVC barrels on that, plus, its got NSF-DWV fittings. otherwise, nice cannon, I like the diamond plate on it.

Atlantis wrote: 40 cal grenades.

those are some damn small grenades, you sure you dont mean 40mm?

http://www.burntlatke.com (might not be back up) and your local hardware store, go at it.

what paint? its electrical tape all over it

LucyInTheSky wrote:You dont need to use primer if you sand the surface of the pipe away and the inside of the fitting, so its rough.

i'd like to know where you heard that, i'd also like to know how sanding softens the PVC to prepare it to be fused with the fitting

i'm thinking gatling gun....

pretty much any metal lathe will do the job, i've got a big old shepard lathe from 1912 and it still runs fine, if you're planning to get one of those mini import lathes, i urge you to take a look on ebay for some used bench type south bend lathes, they can usually be had for about the same price us...