so would the equalization holes be drilled into part #2 and 3 ...but not in the rubber..so air can pass out of piston but not back thru?....i just made mine, but wouldnt fire. tho i guess i did have too much gap between piston and inner cylinder. i also have aspring behind piston , which may not giv...

i did a google on coaxial..all i see are finished products..anyone have a few pics of how its pic together and whats used ?

Ok , so i've seen alot of posts of people showing their designs for a piston...very awesome. i know how they work, but cant seem to find anything on how to make the guns. I want to make a coaxial gun. I can imagine how you attach barrel inside chamber, reducer at end, but what holds the barrel in ce...

http://www.orbitonline.com/products/product.cfm?id=12648&subcat=1892 i cant find this on home depot's website..although their site really does SUCK!! they dont list some of the more common items on their site. anyway i just bought one yesterday...modded it in 5mins (give or take epoxy set time) and ...

may i ask ...how much u spent on all those parts ? if u kept track

Ok so when i first made my cannon C:18''x4''dia B:38''x2''...i used OLD SPICE deoderant spray and a rag rolled up tightly and duct taped. Fit VERY SNUG in barrel. When i fired it , it made a LOUD " THOOOOMMMMMMP!!! which was cool, i liked it. Now i have 2 interchangeable barrels. a 36''x2''dia and a...

well i mactually over it now...i dont need it....but my last post was about the sounds each fuel makes.

well i lightly packed the extension , and its still not quiter, actually after 2 shots it started pulling the batting into the barrel thru the holes........well at least it looks cool with the thing on it :D also i noticed a change in sound after switching fuels. when i first built this thing, i was...

Well its not illegal YET because its still as loud as it was....so no harm YET...nvm this thread then.

i didnt want to say silencer,as i hear its illegal to own ...lol....but i made one tonight...14inches long...4 lines of 14 , 3/8'' holes right to last inch of barrel. 2'' barrel with 3'' muffler...holes drilled inward at 45degree angle towards chamber. Packed with cotton batting. So i fired it.....s...

ya i planned on using potato, but for now im just firing it in my garage in the evening. Im going to make another gun, but make it have interchangeable barrel for different ammo. I have denatured alcohol and put in a good mister, but gun wont fire. Either with a small amount or moderate. Chamber is ...

hello all i just got into this , "HOBBY" if u wanna call it that. my friend came over friday we were watching tv and just totally bored. he just blurted out " hey lets make a potato gun" so thats where it started. With a few minutes of info digging on internet, i got some basic plans. now i have my ...