SpudFiles

What's a good material to make a 1.5" piston out of? Yes i've done some research and all that turned up was wax on http://www.advancedspuds.com. I'm going to be using this in a Galfisk ball valve mod piston so I don't need a ruber face.

I don't know, maybe just some wooden dowel?

milk caps make good pistons, just use a bolt, some washers and nuts and some neoprene washers to piece it together

spudshot wrote:milk caps make good pistons, just use a bolt, some washers and nuts and some neoprene washers to piece it together

Milk caps are too thin they would breay and why not just use PVC rod from Mc master its pretty cheap

Wood would probably work but it would be hard to shape it right. Wow that was a lot of puns.

1" caps fit in 1.5 with ~0.0295 clearance.
Sources:
<A HREF="http://www.spears.com/prod_dimensions_s ... f">Fitting dimensions (cap on 55th page)</A>
<A HREF="http://www.spudfiles.com/Other/pvc_pipe_info.php">Pipe Info</A>

milk caps will not break, i've been using my milk cap piston gun for over a year now with no trouble

try to find an endcap that would fit in your pipe. with a little sanding,I know for a fact,a 1" sch 40 endcap will fit perfectly into 1 1/2" sch 40 pvc pipe

EDIT:oops,I did'nt see that theregoesthewindow already put that

Now that was helpful, thank you. Wow, imagine the kind of piston you could make with a 12" Encap.

i just bought a cap for 1.5 inch PVC today at home depot. I'm using it to block out the air from going to my handle.