The BATF classifies potato guns as "recreational devices", therefore they fall in the same category as BB guns or paintball guns, there are several counties/cities (probably mostly in Kommiefornia) that have banned potato guns, however to my knowledge there have been no Federal rulings on the issue

possibly a clay bird thrower would work? i believe they're similar diameter, though i havent shot skeet recently since the local shooting range banned shotguns

stick it in the oven at 350 for a few minutes, checking on it every now and again, i do this to make flat PVC sheets

all of the manufacturers use different molds for their fittings, i forget what manufacturer joel gets his tee's from, but i know its not one i've ever seen in any store, perhaps that brand of tee is molded differently, without the large stops inside?

that would require alot of custom fabrication, some of us do have lathes and or milling machines, but by the time you buy all the parts, not including trial and error, it would be much cheaper to buy a palmer, or adapt a bulk CO2 reg to work with paintball tanks, doing so only cost me about 20 dollars

you could always use a bulk CO2 reg with some adapters you could easily use paintball tanks, i've done it for a total cost of about 20 bucks

if the floor/walls are wood, i would NOT reccommend using it for welding, better suited for wood/plastic working, if i'm welding, its usually outside or in the shop room at school which is all concrete

its very simple to make a piston valve, or it can be the most difficult thing you ever built, it all depends on the design, the easiest one i've made was just a piece of wood glued on to a piece of rubber, simple!

PVC melts easily, it would most likely get soft enough to fail long before you got it to a temerature that the velocity would significantly increase

if you're talking about the barrett, the recoil isnt as bad as you would imagine, the muzzle brake takes care of alot of it, if its something without a brake or any type of recoil system, then yeah, you'll really feel it.

Urban Ninja wrote:Haha, forks. And by guns in my room I mean like handguns a rifles, real ones. I had to leave them in england

correct me if i'm wrong, but guns are illegal in england are they not?

and why go for an expensive .22, get yourself an M1a or remington 700 in .308 and have some real fun

just for everyone's knowledge. This forum has nothing to do with me

yea, the shop teacher might be cool with it, but you never know who's gonna get word of it from someone, really, i'm done shaping my knife, i just have a bit of final shaping. then i need to harden and temper the steel, file the crosspiece a bit more, solder it on, finish up the handle, then sharpen...

Thanks guys Ill probably try to make my own, see how it comes out. Im in a metal work class at school so Ill make one then. At the moment we just make ninja stars. good luck not getting expelled for that, 20 years ago? sure, my uncle made all kinds of stuff like that, now, you get caught, you're fu...

if you're using 4" you wont be able to find any pressure rated fittings at lowes or home depot, they dont stock pressure rated over 2" you will have to go online for those fittings, http://www.plumbingsupply.com or http://www.mcmaster.com are great places for parts