can you use pvc pipes for the piston body? You can use endcaps... nah there are no end caps that small... I'll stick with the dowel I'm just not sure when you make that small slit to let the air pass on the piston body, do you cut a notch in the rubber gasket too? so where do you live? if in AUS th...

no worries... 2 weeks ago I had no idea what epoxy was so dont count me in for that
as for the piston I'll rather use a wooden dowel...

EDIT
can you use pvc pipes for the piston body?

Well.. I used this tutorials to make my first experimental QEV... http://www.youtube.com/watch?v=apSA_ny8DgM http://www.youtube.com/watch?v=vmxaI3_SJCg&feature=related Instead of a male 1/2 tee I used a female 1/2 tee and 3 connectors because there weren't any and instead of grease I used mechanical...

I did some research, called a few stores and got to the conclusion that QEV valves are not avalibile in my country at all. I was suspecting this while getting parts for my homemade QEV. I asked if they have something like it but they didnt even know what QEV is so I'll have to find a way to make my ...

I've been looking at your other projects , very well made in terms of aesthetics so you clearly need no lessons there. In terms of performance however, while you've perfected the sprung ball valve mechanism, you can get a lot more efficiency from other valves like QEVs, and since you're working wit...

Heres a quick demonstration of what these nail darts can do... I shot this fanta bottle at a distance of about 3 meters. http://img138.imageshack.us/img138/6263/p1040049b.jpg As you can see, the paper cone got stuck inside but the nail made a clear pass through. These shots were taken while I was re...

Thanks guys! I got some footage but I still gotta edit it. Hopefully it will be done till next week. I never thought of a destruction video :D thanks for the Idea, I'll do that as soon as I get some free time. EDIT Out of personal intrest what tools do you use for making this? Rough cutting is made ...

This dart has been tested to 300 psi. It takes about 30 seconds to make. Close cell foam 3/8" cut with sharpened bicycle frame tubing. Push point of 10 nail through a disk and slide it up to the head. Place some hot glue on the nail head and stick on another disk. I like the way it breech loads and...

This is my recently finished M4... http://img684.imageshack.us/img684/3686/p1030036.jpg http://img511.imageshack.us/img511/8648/p1020032b.jpg With mounted telescopic bipod and suppressor... in the background you can see my zefal rush pump... It operates at a pressure of 150 psi but the ekoplastik PV...

This dart has been tested to 300 psi. It takes about 30 seconds to make. Close cell foam 3/8" cut with sharpened bicycle frame tubing. Push point of 10 nail through a disk and slide it up to the head. Place some hot glue on the nail head and stick on another disk. I like the way it breech loads and...