How to make a sealing face for a 1/2 piston valve I was looking for a sealing face while out at stores but i couldn't find one so i made one! https://www.youtube.com/watch?v=09E6e_nQ_JE the parts list is 15mm copper tube copper olive 1/2 male brass compression fitting Hopefully i covered everything ...

Ahhh...how bout this: http://www.ebay.com/itm/MEAD-MV-50-NEW-IN-A-BOX-/230856058203?pt=BI_Control_Systems_PLCs&hash=item35c017e55b Due to size constraints, i'm not sure if it can fit in the gunstock. So I was doing some thinking, and came up with a shut-off valve: Screen Shot 2014-02-08 at 11.58.18...

Piston valve all day, every day. Get yourself some brass fittings and some high pressure!

I love wood grips and stocks, mainly making riflestocks. You can dress up blowguns rather nicely.
My safari rifle stock and my pistolgrip rifle stock!

I been looking around at getting a pressure washer handle though i wanted to make and fit my own handle on it. Does anyone have pictures or a video of the internals of a pressure washer handle? ive tried looking around for some but no luck these are the ones ive been looking at http://ace.imageg.net...

Hey wyz i had a similer idea, what if you just glued a popoff over the hole ?
I like how my gun influenced both of yours

The epoxy's drying in my 1/8" nipple connecting the blowgun handle, so if my tests tomorrow workout, I'll post some pics here Post it anyway! and Wyz, post them diagrams! i also have a few other ideas aswell. and now mk1c The piston housing and 1/4 bushing that goes to the pilot http://i41.tinypic....

Haha righto maybe i missed that , ill upload pictures of my mk1c (c is for compact) and my mk3 which is a co-ax !

Im lost , what did you do wyz?

@Gun freak thanks! The blowgun is epoxied into the stock, i cut all the excess around the blowgun so it was just a straight tube.Then slid it through a drilled hole in the stock at the correct angle. Air chamber is straight down, its a prefrence thing .Blitz knows what im on about :) Though mk3 will...

@Dart guy ive been looking into a coax version and i am working on a supressor aswell. Its quite light , around 2 kg. what are these razor darts you speak of ?

@blitz yeah i carved it myself, its pine wood with a oak stain.

My first rifle post in joining this forum! Well this is my 1/2 inch piston valve rifle. The barrel 16mm(roughly)x65cm long steel. Fits marbles nicely. Preferred ammo is homemade plastic nail darts. Blowgun pilot soldered in schrader valve Air chamber is 40mm pvc, goes up to 160 psi ive bombsheltered...

wait i sent you the wrong video, silly me but the video is a good example of how a qev/piston works

anywho heres the one i ment to link

This theory
Just get high pressures from the other tank for a decent amount of shots.

Well im assuming it will be attached from a external air supply eg compressor or hpa tank, and it will be a constant air flow filling up the air chamber. You will need something to cut off the air supply manually-like a ball valve.If you decied to use anything but a slide. Becuase a slide valve cuts...