SpudFiles

In this topic I wil show you the progres of my first coaxial gun.
My plan is to make a simple coaxial from (pressure rated) PVC pipe, I´m building the gun for the performence not for the desgin .

28/10/07
I made parts for the gun. Today I made the reducer for the barrel, made the endcap and made the piston.
The reducer is made drom black derlin rod, I machined it with a lathe and drillpres.
The piston was made out of 32mm PVC, two iron-rings, and a threaded rod. The sealing face was a big problem because I don+t have acces to soft rubber sheets . Then I found a beer bottle with a system that uses a neopreme washer to seal , I used this for my piston and it´s works .
Richt now I´m afraid that the gun wont work because the piston seals for 80%, so I think that when I pull the 1/4ball valve the piston won´t move Can this be a problem?

people don't usually make build files for simple guns, do they? aren't build files usually for new concept builds. I might be wrong

Well maybe they are

meh, your work space looks like mine

That is just the background, it looks very neat whem your standing in it. The picture was also token in the "crap corner" .
GR.Tom

You need to grease the piston and the the piston housing. Use white lithium grease, you can buy it from a hardware store. This will make the piston slide easily and still seal weel without O - rings.