So, What shoud I use for 80 psi mini coaxial, hot glue, this plastic, wood...?

Actually, it should do that on it's own as the acetone evaporates away. In lieu of pure acetone, nail polish remover will work too (it's mostly acetone) No, it doesn´t work. I tried to do whit that and it didn´t work. My acetone is 100% pure, i think it is used to remove some kind of glue (my dad u...

Well if the mods said that it is dangerous, must I delete the post? I´m not going to discuss it. I hit the catridge with a metal hammer 4-5 times and It didn´t break. My piston isnt going to run at very high pressure. I will usually pressurize at 85psi, the same as my PVC gun. I only wanted to make ...

No, I take polystyrene (expanded) and pour it in big quantities in a container with some acetone. The plastic "melts" and gets "compressed". So that big quantity of expanded polystyrene became into a much smaller mass, and when it gets dry, it is very very strong. Similar as polycarbonate (which is ...

how did you make that? I just made a rifle with a 3/4" barrel

http://www.spudfiles.com/forums/viewtop ... tml#240569

Then, that material can be used as a piston at those pressures?

The Polystyrene: http://en.wikipedia.org/wiki/Polystyrene The solid poliestirene is a strong and light material, so, I decided to make some catridges for my pneumatic gun. MATERIALS: -Acetone: It must be 100% pure http://img.alibaba.com/photo/11303177/Acetone.jpg -Expanded polystyrene: You can get i...

Oh, Ok. Thanks! So, It may be something like a sponge or a spring.

Edit: I´m going to make a tutorial soon to make it.

I´m going to use it at 90-120psi, but I´m going to make the chamber and the barrel longer than the gun shown in the photo.

EDIT: Sorry but could you explain me what the bumper is? Or post a link where it is explained.

The plastic in the photo isnt the piston, is the ammo for my pneumatic rifle. I want to know if this material can be used in a piston.

Or are you telling me to cut the CATRIDGE? I´m new on piston spudguns.

Hi Well, I was planning a mini pneumatic coaxial gun, but I didnt know which material use for the piston. Some weeks ago I made a Polystyrene catridge, and its very strong and light. I wanted to know if it would be used for a mini pneumatic coaxial gun piston, piloted by a schrader valve, something ...

Hi! I´m new here. I´m from Spain and I don´t speak English very well. Here, the pneumatic spudguns are not very famous, but I did one. The 20mm pipes are rated to 16bar, but I don´t know the 50mm pipes rating, but it is really thin, I shoot marbles, steel balls and darts... Video: Shooting a steel b...