This cannon design is originally from scitoys.com, but I didn't see it anywhere on the Instructables site, so I documented my own. However, Kipkay had to go and show me up with his own version, just to make me look bad. There's also the ultra-portable version from Kiteman.
DSCN4787.MOV3 MB
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Signing UpStep 1: Getchyer Materials
First is-duh-get the supplies you'll need.
Materials:
Film Canister
Hairspray
Heat shrink tubing
Piezo igniter from an old fireplace lighter
Tools:
Pointy pokey thing
Something that will heat-shrink the heat-shrink
A side note: there is another Instructable now by Geoffrito about how to remove the ignitor. You don't need to add extensions unless you want to, just extracting the piezo igniter should give you enough length.
Materials:
Film Canister
Hairspray
Heat shrink tubing
Piezo igniter from an old fireplace lighter
Tools:
Pointy pokey thing
Something that will heat-shrink the heat-shrink
A side note: there is another Instructable now by Geoffrito about how to remove the ignitor. You don't need to add extensions unless you want to, just extracting the piezo igniter should give you enough length.
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http://www.spudfiles.com/spud_wiki/index.php?title=Legal_issues
it says for POTATO GUNS that they are illegal if used as a weapon or if shot in an area where shotgun fire is illegal.
Itll probably blow off an ANTS hand. Even with gun powder. And getting into all the trouble of getting gun powder and using that massive amount of energy with a lame film canister cannon?
Seriously, if you even get your hands on gun powder you should make something way more grand...like going to jail or something =D
Is the igniter something like this? If so, post anyway, just don't copy his. We like different versions. Also, the filament is almost certainly tungsten, like virtually all light bulb filaments.
BTW, did you build the Mousebot in your avatar? Mine doesn't want to work right...I can't figure it out.