hot glue piston

[super spuder]

I am still working on my piston gun. I have tried everything wood to hockey pucks, but i just cant get a seal. So i am going to make a hot glue piston. It is going to be 3 by 3. So i went and got some 3 inch pipe tonight, but before i start putting hot glue in the pipe, i was wondering if there is anything that you can spray/put on the pipe to make the piston slide out when i am done with out making the hot glue all holly?

[integral]

Silicone spray works a treat. But any fine lubricant that does not degrade polymers (ie solvents) will do.

[super spuder]

Is WD40 a solevent?

[Fnord]

Well, I think wd40 has kerosene and oil in it, but it shouldnt dissolve pvc. If you are paranoid use pam.

[super spuder]

ok. i think i will use pam

[Pyro Ninja]

you can just use spray cooking oil....worked for me

[super spuder]

i already used pam

[Boomer_]

If you feel like it, and your piston is serviceable, find the nearest hobby shop that sells R/C car parts. Ask them for some 50 to 80 weight shock oil. That is your best bet. I think it should be around 3-4 dollars a bottle.