trying out for 3rd cannon need a little help

[cannon monkey]

alright alishisgreat.......can i fill it with epoxy or hot glue then use somthing like a stress ball or soft dry spounge as a bumper so when it gets pushed back it wont break?

[iisthemuffin]

To seal off the back of mine, i cut a pill bottle down to size and wrapped it in tape and put it in. I bolted it to the piston with the nut that holds on the sealing face.

[cannon monkey]

mmmm i can ask my grand ma for one her empty pill bottles

is it hard to make a piston from a 3 inch tee
or should i stay with a 2 inch?

[ALIHISGREAT]

it could be easier to make a 3" tee piston, if you have the parts needed readily available, but i would say generaly its easier to make smaller pistons (to a certain point, a 1mm piston would be pretty hard )

[cannon monkey]

thats fun well i tring to get the money for this 3rd one and my moms tring to talk me out of making this cannon,

any ideas what i could do instead of making a cannon ( i going to make a post about it later tonight but i like to make stuff
she telling me to make model trucks and cars but i think thats really boring

she ok with the whole cannon thing it just i not pose to be shooting them around where i live