Apropriate air tank/reservoir

[burito]

Hi, im kinda new to the whole spud cannon thing, but i was wondering if a 1litre, steel drink bottle (like below) could be used as an apropriate air tank, and if so, if anyone might know the aproximate air capacity/psi of it.

[Pilgrimman]

I don't think those are designed for pressure. Furthermore, my friend had one get a huge dent in it due to a slight knock against a table. Bottom line, there are much better practical and safe ways to make an air chamber.

[starman]

On top of dubious pressure handling ability, another problem would be interfacing it to the rest of your cannon. You'll have to thread it or use a lot of JB weld to get your interconnections air tight.

Yes, it looks good but it just isn't setup to do the job at hand.

[burito]

i got the idea from somewhere, but i couldn't remember where at the time.
But heres the vid where i got the idea from

[john bunsenburner]

This question is kind of off topic but are you swiss by any chance? its a swiss bottle so i am wondering if we both have the same prob...Ich bin auch schweizer in bern und kriege hier fast nix brauchbares für unter 50chf

[pizlo]

This has been brought up before, and there are hard ones and soft ones. The soft ones I can put dents in with my knuckles... the hard one gave me a nice surprise when I tried to show how soft it was. if it had take a hard hit on say a metal edge the I'd put 100 PSI in it.