Big homemade spud gun 

thats crazy cool!, good work! I love the old "touch hole" ignition system :D.

I reckon the British army would buy that off you! Fab!

Looks like a LOT of FUN!

very nice!

Great! Nice welds! what kind of welder did you use? Stick / Mig / Tig?

Brilliant! A piezo igniter would help preventing burnt fingers :)

Weld a spark plug into the chamber and rig it up to a magneto, then use concrete filled tennis balls as ammo! LOL

@Damianmccl -I agree, because it`s made of metal it tends to heat up a little when a shot is fired. lol

@spitzification14 -Of course it is if you make sure it doesn`t have any gas left.

What does the compressor and other cylinder do? Is it producing some kind of fuel/air mixure from petrol/gasoline?

@Aussie50 -Thanks, I like it too becouse if it fails it depends on me.

@ciclotronforever -Our dad welded it with his mig/mag becouse we have only the old crappy stick welder.

Alkaa olee perunatykissä kaliiberi kohdallaan :D

@locouk -I`ve already casted a 650 g lead ball ready for testing.

-Onhan se kiva kun puolen litran pullo sopii mukavasti.

@honeybunchickens -Thanks !!

@donyboy73 -Thanks !

@plavins1 -Hahaha that`s right !

Hieno =D

@steamwally -Hahaha poor army....

hui saatana lopus haha