please help me making a pneumatic cannon (noob here)

[eggbom]

ok thanks guys for helping!

i have now one that works, now it's just to fix everything and make the gun 'beautifull'
it's not shooting that hard what i've seen here but it works

if it's done i'll post it here of course.

[frozebyte]

Pictures of your completed work would be nice!
What are the parts you finally used?

[eggbom]

i used metal parts because it fit's by my wooden gun i've made (that's my work, make wooden stuff)

but first i must paint it or something, then i make a video and pictures.