Any suggestions on how to make this thing cheaper? 3" black steel pipe is very expensive... at this point I'll have to wait to build the thing till... "later."

Moon & CS, I'm lovin your information I'm not nearly as intimidated by hybrids now... just gotta figure out how to afford the thing!

x

Pardon the thickness of my skull.... but how does a cam lock help keep the good stuff in? Where is it situated in the cannon?

Also, compressed air usually implies a compressor. But something silly and portable like a bike tire pump could work too, no?

Wow folks this is very useful information... your experience has forced me to reconsider the project in total! It sounds like O2 is neat on paper, but it appears to be far from practical. Details of the design, some of which would further suggest that O2 would be a bad move: Pipe materials are to be...

Hi folks, I'm trying to design a steel potato cannon that uses propane and a bit of O2 to generally increase the % of available combustible matter in the chamber. While I would love to ramp the thing up to something insane like 5x mix of O2 to create a giant boom (remotely of course), I understand t...

Any ideas on where to get 3" steel pipe? I'd like to make a full steel cannon so it'll withstand the pressure of launching a 2.5' long slug of drywall cement. But with that kind of weight, I'd like the whole gun to be made of steel so that safety is well in hand. Any ideas?

I want to build a potato pistol... a little handheld. Not a mini made out of garbage & tape.... but a 2" chamber made of fittings, and some kind of 1" or 1.5" barrel. I found all the parts I need at home depot but here's my problem: none of the fittings say anything about being pressure rated. In fa...

I've got one in my spudgun and oddly enough it doesn't really seem to notice! Depending on the propellant you use, you could coat it with residue or ash or whatever, but the heat evidently isn't enough to kill it. I've probably shot mine 100 or so times with the fan so far and no problems.

Hey Crowley, I don't take your efforts to correct me personally. I agree with you--I did pull the lazy card and not search for cold weather topics prior to posting. I'm guilty as charged. I also agree that your response in correcting me was kind, professional, and helpful. My sentiment arises from t...

I appreciate your candor... I will join you: I think that the residents of this web site who are bursting with pride over the vastness of its search engine should spend less time shaming people for not using it and more time on refining it and making it more robust, making it more effective. Because...

Hey folks, here's a Minnesota question for you. Today It's gonna be a high of 22 degrees. If I were to operate my spudgun today, would I be in danger? Are there safe operating temperatures for sch 40 PVC?

Thanks!

Good advice, Colonel, thanks for the info!

Ohhh I gotcha. I didn't see the connection. Thanks!

silverdooty wrote:a buddy of mine's daughter just got married.
This is not a How-To, this is merely what I did in my spare time yesterday.

I'm not seeing any media that shows what you did with your loot! Did you edit it out?

Neat!! Creator, are you going to post the how-to of this contraption? This is the final point of research I'm working on before I make my next cannon. It seems you've got exactly what I'm looking for!

Yup, Turbo, you were right. Even my bigger one is 100% epoxy. Boo!! Back to the drawing board... I emailed a few of those bbq companies, asking if they had schematics I could see (though I have no hope of understanding them yet), so we'll see where that goes. I may have to go to a darn technical sch...