This is my first post here and also my first gun. It is not a real spud gun, its a smaller caliber. It was a nice project to gain some experience with spudgunning and soon ill be going on to the real work.
About the gun:
It is a 1,5L coke bottle attached to a PVC pipe (13mm diameter, 49cm long)
I made a hole in the cap and fitted the pipe thru it
The ammo were small glass marbles with a few layers of duct tape around em.
Inside was a spark strip made by a small plastic tube from a pen with 10 bugs on it, each about 1mm from eachother. The first and last bugs were connected to a piezo sparker. This resulted in a nice 9-spark ignition.
Shooting sequence:
-The cap+pipe is unscrewed from the bottle.
-Put duct tape around ball until it could not fit into pipe
-Bash the taped ball into the pipe (from the backside, where the cap is)
-spray hairspray in
-quickly screw cap on
-aim (or don't)
-FIRE!
The results were nice!
I shot it around in my backyard a few times. The damage done:
-Left an imprint in my wooden fence.
-Left a very small imprint in the metal pole of a street light
-I shot through the plexiglass window of my barn.
Im really proud on the damage especially on the hole in the window, my mom was not.... 
The gun is broken now, when one of the screws for the spark contact started leaking a real lot of heated air was squeezed through and in a few shots it all melted away. My next project will be a real combustion spudgun.
Well that was it, I just wanted to show this to you guys!
Thanks for watching and leave a reply if you want.
psycix
)
