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SpudFiles Potato Gun Commercial

Last post by quinn whitsitt
Posted in Combustion Cannons
Replies: 15
by PCGUY » Tue Oct 29, 2013 10:54 pm » in Combustion Cannons
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I've been wanting to get in some spud shooting action this fall before the weather got cold. I know it's been a while since I filmed anything for...

Last post

thank you for creating this website is there anything i can do to help
15 Replies

1124892 Views

Last post by quinn whitsitt
Fri Feb 09, 2024 2:38 pm
PVC Pipe Info

Last post by PCGUY

by PCGUY » Wed Oct 09, 2013 1:38 pm

PVC Pipe Info

PVC is used by plumbers, pool installers, and so on, and local building and construction regulations set the safety and materials...

0 Replies

71996 Views

Last post by PCGUY
Wed Oct 09, 2013 1:38 pm
The Offcial Machinist Thread: Revised 01/04/2014

Last post by Yexinss
Replies: 1097
by jrrdw » Tue Aug 02, 2011 5:54 am
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This is where members who need help getting machining done to their spudgun parts. There will be some guide lines and they are as follows:...

Last post

As my title described, 2k for modifying Daytona Recoil system to shoot Nerf darts. Full mechanical no wires no battery only HPA. If you can machine...
1097 Replies

900152 Views

Last post by Yexinss
Wed Aug 25, 2021 12:22 pm
Good Deals Thread

Last post by PaperNinja
Replies: 41
by clemsonguy1125 » Wed Aug 11, 2010 8:01 pm
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I keep seeing good deals on ebay for cheap parts that would be great for spud guns but not the kind I build. I figured it would be a good idea to...

Last post

$550 4500psi compressor
41 Replies

231412 Views

Last post by PaperNinja
Wed Dec 05, 2012 7:08 pm
Launcher Failure Analysis Log

Last post by SEAKING9006
Replies: 32
by Velocity » Sun Apr 15, 2007 11:28 am
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The idea behind this thread was taken directly from a sticky on the Spudtech forums, seen at I, along with several other members, believe that this...

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I never made my inside out sleeve valve because I didn't know how to use o-ring, most important of all don't try gluing them in place, second if its...
32 Replies

250390 Views

Last post by SEAKING9006
Fri Jun 27, 2008 8:11 pm
Golf Ball Barrel FAQ

Last post by K8TOW
Replies: 34
by squeaks » Wed Jan 24, 2007 6:42 pm
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Okay, so one of the most asked about barrel is the golf ball barrel. Here are some frequently asked questions(and some unfrequent ones too).

Q: Why...

Last post

I use pvc plugs and caps
34 Replies

352953 Views

Last post by K8TOW
Thu Mar 16, 2023 5:22 am
Ammo Ideas

Last post by quinn whitsitt
Replies: 359
by PCGUY » Tue Apr 04, 2006 10:48 am
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First post

Ammo

I have put together a few ammo ideas for different size barrels. All pipe is PVC unless otherwise stated. If you think any ammo ideas should...

Last post

help sorry i typed to fast
359 Replies

5241404 Views

Last post by quinn whitsitt
Thu Feb 15, 2024 11:44 am

Topics

''Marker'' Tennis balls

Last post by spudamine
Replies: 16
by Gidney14 » Wed Aug 03, 2011 5:59 pm
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I was brainstorming ideas for ammo for my WIP 2.5 in cannon, and A marker tennis ball came to mind. I was thinking Take a tennis ball, puncture or...

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As others have said, using a tennis ball is a bad idea.
these are shots from my tennis ball cannon, 1st shot is 65psi burst disk, 2nd shot is...
16 Replies

5415 Views

Last post by spudamine
Thu Aug 04, 2011 1:38 am
Wire nuts....

Last post by jackssmirkingrevenge
Replies: 11
by sco77 » Wed Aug 03, 2011 4:49 pm

First post

Since I was in the electrical field for a couple years I have 1000s of wirenuts, I found these fit 1/2 perfectly (once the little wings are trimmed...

Last post

Just fill up the front with something and it will be more stable.

Yep, a BB or nut and few drops of epoxy or hot glue should do the trick....

11 Replies

3840 Views

Last post by jackssmirkingrevenge
Wed Aug 03, 2011 11:12 pm
Copper Pipe in the UK

Last post by nathanhd123
Replies: 7
by nathanhd123 » Wed Aug 03, 2011 11:44 am

First post

Does anyone know where I can buy some copper pipe and fittings in the UK. I don't mind if its a store or online.

Last post

Thanks JSR lots of helpful links on the thread.

Also is copper pipe pressure rated?

7 Replies

2524 Views

Last post by nathanhd123
Wed Aug 03, 2011 12:26 pm
Safety check...

Last post by jhalek90
Replies: 11
by sco77 » Mon Aug 01, 2011 5:59 pm

First post

This is my first gun that I made which was originally made to only goto 200PSI, but I was thinking about converting (gauge) to 300PSI, I know it can...

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That qev should be fine at 300 psi. If you want to be safe, don't load any ammo, keep the barrel away from anything important, and fill to 300psi. If...

11 Replies

3331 Views

Last post by jhalek90
Tue Aug 02, 2011 8:51 pm
Cant find anything but DWV.....

Last post by Gidney14
Replies: 14
by Gidney14 » Mon Aug 01, 2011 4:33 pm

First post

Currently in the middle of building a sprinkler valve based tennis ball cannon, and NO where in Maine can I find pressure rated PVC. I have been to...

Last post

I saw, that, and was very jealous. I should have some completed pictures up tomorrow, Ive got the epoxy on the SV drying, and was able to get...

14 Replies

5258 Views

Last post by Gidney14
Tue Aug 02, 2011 8:01 pm
Piston rubber

Last post by Britishninja
Replies: 7
by Britishninja » Tue Jul 26, 2011 12:30 am

First post

What is the best type of rubber to use for a pistion on a piston valve

Last post

I found the perfect way to seal off the barrel using a soup can idea unfit from my other question about a piston it's a Tank to bowl gasket for a...

7 Replies

2792 Views

Last post by Britishninja
Mon Aug 01, 2011 10:51 pm
Floating O-Rings for 1" QDV

Last post by tony48
Replies: 15
by tony48 » Wed Jul 27, 2011 1:58 pm
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I'm using 1 nominal PVC pipe for the valve body of my QDV cannon. I want to make a floating o-ring piston. The ID of 1 PVC is 1.029 . At my local...

Last post

Yes the problem was I was trying to turn the material too far from where it was supported so it was bowing and causing chatter. I got this fixed...
15 Replies

9351 Views

Last post by tony48
Sun Jul 31, 2011 7:48 pm
Unique slug....

Last post by sco77
Replies: 4
by sco77 » Fri Jul 29, 2011 2:11 am

First post

I found these little knob things laying around I'm not sure what they are called but I guess a hardware store probably carries them, they fit 1/2...

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They look really good and it would do some damage but I dont think it would have a very good flight path since its even on both sides causing it...

4 Replies

3588 Views

Last post by sco77
Sat Jul 30, 2011 11:56 am
Direct air injection

Last post by Technician1002
Replies: 3
by Britishninja » Sat Jul 23, 2011 7:59 am

First post

I'm currently working on a punetic cannon and I've been Going back and fourth Ruth the idea of directly hooking up an air compressor motor to the air...

Last post

That makes a very heavy cannon. It is best to leave the noisy heavy part sitting on the ground a moderate distance away.

I have considered building...

3 Replies

1738 Views

Last post by Technician1002
Sat Jul 23, 2011 6:48 pm
Pistons for barrel sealing piston valve

Last post by Gun Freak
Replies: 5
by Britishninja » Fri Jul 22, 2011 12:01 am

First post

Hello right now I have an old soup can as a piston for my 3 piston valve I have been debating wether or not i need to fill it with something and was...

Last post

Is it a co ax or a tee?

5 Replies

4698 Views

Last post by Gun Freak
Fri Jul 22, 2011 9:42 am
PVC pressure rating

Last post by Snick480
Replies: 9
by Snick480 » Wed Jul 20, 2011 9:03 pm

First post

I've seen this topic discussed quite a bit in these forums, but I need to throw this question out again to the experts. I bought some PVC pipe for a...

Last post

Thanks again to everyone for your help with this!

9 Replies

4504 Views

Last post by Snick480
Thu Jul 21, 2011 6:18 pm
Resin Casting Ammo?

Last post by bobgengeskahn
Replies: 6
by bobgengeskahn » Sun Jul 17, 2011 11:41 am

First post

Hello everyone, it's been a long time since I've posted around here but I have something that I think the people on here would know best about.

I...

Last post

Right now all I have is the typical assortment of hand tools, drills and a dremel (assortment of saws and such, but those aren't really applicable to...

6 Replies

4845 Views

Last post by bobgengeskahn
Tue Jul 19, 2011 1:32 am
Propane adapter

Last post by Gun Freak
Replies: 15
by Gun Freak » Mon Jul 18, 2011 4:52 pm
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I've heard of people using propane adapters that screw onto the propane tank and have 1/4 npt threads on the other side. Where can I get one? Besides...

Last post

Thanks, I think I remember that one.
15 Replies

7237 Views

Last post by Gun Freak
Mon Jul 18, 2011 11:02 pm
2" Ammo Ideas?

Last post by jsefcik
Replies: 8
by Jabingo19 » Tue Jul 12, 2011 1:44 pm

First post

Just looking for a few ideas to put in my 2 barrel for my 2 piston valve cannon (showcase coming as soon as I get it painted)

Thanks
Jabingo19

Last post

Caulking tubes are the way to go!!!!!

8 Replies

7540 Views

Last post by jsefcik
Thu Jul 14, 2011 10:42 am
Aluminum Rod In a Two Piece Piston

Last post by Gun Freak
Replies: 10
by Mr.Tallahassee » Mon Jul 11, 2011 10:35 pm

First post

I was wondering If I could use a 3/16'' aluminum rod in a piston valve. I already have the rod from a previous project and it would be MUCH lighter...

Last post

Piece of all thread=2 dollars.

10 Replies

5253 Views

Last post by Gun Freak
Wed Jul 13, 2011 5:46 am
Refillable 12 gram CO2 capsules

Last post by Fnord
Replies: 4
by jackssmirkingrevenge » Fri Jul 08, 2011 12:16 am

First post

Found these diagrams during an unrelated search, I remember there had been some discussion about converting CO 2 capsules for re-use so they might be...

Last post

I never thought about it before, but when I read your post I thought hmm... I wonder if you could just tap schrader threads into the inside of the...

4 Replies

3652 Views

Last post by Fnord
Fri Jul 08, 2011 12:53 pm
Golfballs???

Last post by cannon monkey
Replies: 6
by metalmeltr » Tue Jul 05, 2011 11:38 pm

First post

I just built a pnuematic golfbal gun (showcase thread coming soon) and i am looking for a cheap source of massive quantites of golfballs, pregferably...

Last post

Flee market by me has bags 500 for like 10-15 dollars the guy has thousands in back of his truck

6 Replies

3431 Views

Last post by cannon monkey
Wed Jul 06, 2011 11:10 pm
Schedule 10 SS Pressure Rating

Last post by saefroch
Replies: 2
by saefroch » Sun Jun 26, 2011 7:40 pm

First post

I have numbers, but I don't know how to produce an approximate pressure rating from them:

Wall thickness: 0.065 or 1.65mm
ID: ~.5
Allowable stress:...

Last post

Thanks very much. Looking at a max pressure of about 2.2kpsi for a 20x mix, it seems I'd be perfectly justified using sch 10 SS parts. :D

Of course...

2 Replies

2467 Views

Last post by saefroch
Sun Jun 26, 2011 9:31 pm
Dissolving epoxy/Flash circuit electrodes problem(s)

Last post by saefroch
Replies: 12
by saefroch » Mon Jun 20, 2011 6:34 pm

First post

Is there anything that I can use to dissolve epoxy? I just accidentally epoxied my electrodes together...

Last post

Well I'm double posting because I changed the title of the thread to reflect it's now-changed nature. I connected a simple pizeo to both electrodes...

12 Replies

3031 Views

Last post by saefroch
Mon Jun 20, 2011 10:30 pm
Standard compressor regulator max pressure?

Last post by Gun Freak
Replies: 3
by Gun Freak » Fri Jun 17, 2011 1:20 pm

First post

I have a spare regulator I would like to put on my air tank but the air tank is used at 250 psi. This is like the regulator I have... Mine is from a...

Last post

I can't find a rating on it... I mean input. QEVs are rated to 125 but they can handle 800... I'm wondering if the same thing applies here too.

3 Replies

1486 Views

Last post by Gun Freak
Fri Jun 17, 2011 2:22 pm
How to acquire materials from a scrap yard

Last post by ramses
Replies: 19
by ramses » Fri Jan 29, 2010 4:36 pm
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I am picking up my lathe tomorrow!! (very lightly used 7x14) and I will obviously need materials to turn. I have never really used a lathe before, so...

Last post

I was actually considering looking for a cheap plasma cutter, but I know that works better for plate. Unfortunately, I still only have a hacksaw for...
19 Replies

6410 Views

Last post by ramses
Mon Jun 13, 2011 7:44 am
Boring through fittings?

Last post by tony48
Replies: 7
by tony48 » Mon Jun 06, 2011 2:18 pm

First post

I was looking at Kaneda's Strafer design:

And the plans look great. My only problem is that I don't know how to bore through the 3/4 45 degree...

Last post

I would saw off the corner that use a file to clean it up and shape, not the prettiest but it should work.

This is a pretty decent idea and I may...

7 Replies

2722 Views

Last post by tony48
Mon Jun 06, 2011 8:55 pm
High pressure rated materials.

Last post by Labtecpower
Replies: 2
by warhead052 » Thu Jun 02, 2011 10:56 am

First post

I would like to know what would be the best materials for a high pressure coax, with a T inside so I can load ammo directly into the chamber. By high...

Last post

this will help. use it !

2 Replies

1508 Views

Last post by Labtecpower
Thu Jun 02, 2011 2:06 pm
One for the Australian members - 2" BSP threaded at end

Last post by evilvet
Replies: 4
by evilvet » Fri May 27, 2011 11:18 pm

First post

Hi all

I am looking for some 2 BSP threaded pipe sections, if you are familiar with the 1 lengths at 1 foot, 2 foot etc they sell in Bunnings you...

Last post

20 bar is all my current compressor can provide. Multiple shots is the hope for the bigger chamber.

The port valve is electronically triggered and I...

4 Replies

1939 Views

Last post by evilvet
Thu Jun 02, 2011 2:36 am
PVC is fragile

Last post by Technician1002
Replies: 12
by Technician1002 » Thu Jul 08, 2010 9:03 pm

First post

I have been expecting this for quite some time. My Mouse Musket used to break PVC pistons on a regular schedule. I used a PVC pipe cap in my...

Last post

I found a photo of another old PVC cannon of mine that broke the female PVC adapter. It is a cannon that used the piston that is now in my ABS...

12 Replies

4061 Views

Last post by Technician1002
Thu May 26, 2011 10:51 pm

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