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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

649105 Views

Last post by quinn whitsitt
Fri Feb 09, 2024 2:38 pm
Sketchup Model Library

Last post by mrfoo
Replies: 152
by dewey-1 » Tue Mar 24, 2009 12:12 pm
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First post

Over the last year I have made a lot of CAD drawings for
Pneumatic Launchers.

I have imported several of them into Sketchup format.
Here is the link...

Last post

Bollocks. Dewey put them out in the hope that, and I quote

some of you can make use of these!

There's absolutely nothing wrong with using them,...
152 Replies

383875 Views

Last post by mrfoo
Mon May 20, 2024 11:17 am
Solvent Welding Course Recommended For ALL

Last post by Technician1002
Replies: 46
by sgort87 » Fri Aug 04, 2006 8:18 pm
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Originally posted by DR on the Spudtech forums:

IPEX Solvent Cements ONLINE Course can be found here:

It is recommended that you download and...

Last post

Your earlier post about just scoring the surface, has me wondering if that is why OATEY makes a brush tool that scores the inside of a fitting, and...
46 Replies

199985 Views

Last post by Technician1002
Thu Dec 02, 2010 5:04 pm

Topics

goodies from USG

Last post by D_Hall
Replies: 16
by jackssmirkingrevenge » Tue Oct 18, 2011 10:18 am
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Today after some undue scrutiny from customs, was finally able to take home a package from our benevolent sponsors , care of Mike and Pete :)

Aside...

Last post

As tech said, it's not a big deal with current tech.

But even with old school tech it's not that big of a deal.

1) Get a mirror that spins at a...
16 Replies

8013 Views

Last post by D_Hall
Fri Oct 21, 2011 8:02 pm
GGDT and windows 7?

Last post by ramses
Replies: 8
by JDP12 » Fri Oct 21, 2011 6:49 am

First post

Did a search for this but didnt find any results so wanted to ask-

I cannot get GGDT to work with windows 7. Whenever I try and run it it tells me...

Last post

doing the right click run as administrator did the trick, thanks all!

right click -> compatability tab -> check the box at the bottom that says run...

8 Replies

2125 Views

Last post by ramses
Fri Oct 21, 2011 3:41 pm
projectile testing - any volunteers?

Last post by jackssmirkingrevenge
Replies: 139
by jackssmirkingrevenge » Wed Mar 30, 2011 11:37 am
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This thread raised some interesting questions regarding streamlined projectiles and it would be good to have some practical results to back up the...

Last post

JSR, you seem to have duplicated my results.

Thanks for that, I knew I had seen similar deformation on a nail but couldn't remember where :?...
139 Replies

51597 Views

Last post by jackssmirkingrevenge
Mon Oct 17, 2011 10:43 pm
How to reinforce an air cannon?

Last post by D_Hall
Replies: 32
by ThatGuy » Sun Oct 09, 2011 6:36 pm
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I'm new to this forum but have been reading posts for a while

I've been looking for a list of easy ways to reinforce an pneumatic cannon to prevent...

Last post

:?
Well.... what should I do if lowes AND home depot somehow fail me and don't carry steel pipe? it is in plumbing section at lowes or home depot...
32 Replies

12736 Views

Last post by D_Hall
Wed Oct 12, 2011 9:34 am
Pressures

Last post by jvw1979
Replies: 20
by Spitfire » Thu Mar 20, 2008 3:57 pm
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Please help me i am admitidly a noob when it comes to foreign pressure systems. My question follows.

What is the difference between psi and psig?
or...

Last post

Spitfire, Hi .. Nice to see a fellow south african on here. here is what you do.
go to google and just type things like 1 bar in psi it will show you...
20 Replies

8549 Views

Last post by jvw1979
Wed Oct 12, 2011 2:03 am
carbon steel pipe

Last post by MrCrowley
Replies: 2
by shinestar11 » Mon Oct 10, 2011 2:34 am

First post

We, Hunan Shinestar Steel Group, as a large investment group, are specialized in carbon steel pipe products manufacturing, steel products stocking...

Last post

Thanks, locked.

P.S. The above post is a lovely example of how members should handle infractions on this forum. Notify the mods/admin and leave a...

2 Replies

1988 Views

Last post by MrCrowley
Mon Oct 10, 2011 2:50 am
hammer valve concept idea

Last post by warhead052
Replies: 5
by streetfire » Sat Oct 08, 2011 9:23 am

First post

hello to all

i have always wondered if a hammer valve could be used too power a bigger cannon i wanted to build something wit a back barrel breech...

Last post

Looks like this is what I will do to make my friend the howitzer he wanted... Except you get to hit the valve with an actual hammer, something along...

5 Replies

3898 Views

Last post by warhead052
Sat Oct 08, 2011 3:53 pm
Is this 1/4" BSP?

Last post by nathanhd123
Replies: 7
by Goats spudz » Sun Oct 02, 2011 9:21 am

First post

This website sells Popoff valves Cheap But there thread sizes make no sense

Last post

I buy all my pneumatic parts from Airline Pneumatics.

Here are there pressure relief valves. Cost around £25.

7 Replies

3364 Views

Last post by nathanhd123
Sun Oct 02, 2011 2:24 pm
"implosion" launcher

Last post by DYI
Replies: 21
by jackssmirkingrevenge » Sun Aug 28, 2011 3:07 am
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Following this revelation by D_Hall (which I'm sure will shortly be unlocked) I wonder if it could be applied in a practical manner by those without...

Last post

2-D simulation will be able to properly model heat transfer and the effects of my particular chamber geometry, but the main push to do so is the...
21 Replies

6187 Views

Last post by DYI
Sat Oct 01, 2011 12:56 pm
Apparently spud gunning lives!

Last post by WingerCT
Replies: 2
by jimmy101 » Thu Sep 29, 2011 7:33 pm

First post

I've been around these forums for a loooong time and it is refreshing to see two new posters with new ideas and the ability to fit into the...

Last post

Thanks for the warm welcome, Jimmy! You've made my day: I've never been accused of doing something fiendish . Feels kinda good ! :lol:

And as for...

2 Replies

1371 Views

Last post by WingerCT
Fri Sep 30, 2011 12:34 pm
Preloaded pnumatic cartridge?

Last post by jackssmirkingrevenge
Replies: 12
by KS-collector » Thu Sep 29, 2011 8:12 am

First post

I was looking into making a cannon with the combustion cartridge idea, to use as an artillery gun for milsim Airsoft events, but most Fields have a...

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what type of valve do you think would work best? Im thinking sprinkler valve, but still debating.

A sprinkler valve on every cartridge is a bit...

12 Replies

4231 Views

Last post by jackssmirkingrevenge
Thu Sep 29, 2011 5:14 pm
High pressure metal piston valve seat

Last post by Pedrojoca
Replies: 16
by Lockednloaded » Sun Sep 04, 2011 9:10 pm
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I'm not sure if this belongs in the how-to section, but I can make a how to on the full valve if y'all would like. This is just a standard part that...

Last post

why did it have to be me to do this :evil:

i don't get it can anyone explain? :(
16 Replies

9644 Views

Last post by Pedrojoca
Thu Sep 29, 2011 2:30 pm
My first homemade airgun shooting an arrow

Last post by mpmrla
Replies: 8
by mpmrla » Sat Sep 24, 2011 11:11 am

First post

Today I uploaded a video of the captive piston
arrow launcher mod to my first pneumatic QEV
cannon. When I get some time I will post pictures
and...

Last post

I got ya.
Although a sharp broadhead in
this cannon could make a tyrannosaurus
squeal!

8 Replies

4370 Views

Last post by mpmrla
Sat Sep 24, 2011 6:48 pm
QEV'S

Last post by Goats spudz
Replies: 6
by mpmrla » Wed Sep 21, 2011 2:25 pm

First post

Hey everyone!
Can anybody tell me where i can
find QEV's rated higher than 10 Bar
I have only been able to find A QEV
with a max pressure rating of...

Last post

omg i launched a fart ut of an airgun and it really smells

6 Replies

5705 Views

Last post by Goats spudz
Wed Sep 21, 2011 5:30 pm
Working on a valve of a different stripe...

Last post by Gippeto
Replies: 6
by Gippeto » Mon Sep 19, 2011 8:57 am

First post

Have been working on this for a little while now. Think I've about got it figured out, but a fresh pair of eyes may see something I'm missing....

Last post

The Eunjin's will work, but they're a bit pricey here. Was leaning toward using cast and sized .358 ... pistol rounds for light ...rifle rounds for...

6 Replies

2817 Views

Last post by Gippeto
Tue Sep 20, 2011 10:04 am
Brass Tube Question

Last post by nathanhd123
Replies: 3
by Goats spudz » Sat Sep 17, 2011 10:13 am

First post

Will a 6mm bb fit in this tube?

Last post

Yes, always be sure to check the wall thickness. I made a similar mistake a while ago and had to buy a new section of pipe as nothing would fit in it.

3 Replies

2725 Views

Last post by nathanhd123
Sat Sep 17, 2011 3:02 pm
Math Question Volume/PSI

Last post by jackssmirkingrevenge
Replies: 1
by Temple » Wed Sep 14, 2011 7:57 am

First post

If you have a chamber 4 x16 the volume is 200.9

I add air until the psi is 100psi.

If I add 4 to the chamber but don't add air what would the psi...

Last post

Boyle's law says that pressure x volume is constant.

100 psi x 200.9 = X psi x 251.2

X psi = (200.9 x 100)/251.2

= 80 psi

1 Replies

1166 Views

Last post by jackssmirkingrevenge
Wed Sep 14, 2011 8:03 am
Ballistics Gel test video. BBMG/PVC coax/ HPA piston valve.

Last post by jhalek90
Replies: 12
by jhalek90 » Sun Sep 11, 2011 11:37 am

First post

This gel was made by following SB15's tutorial:

I colored the gel with red food coloring, it is NOT jello.

The gel was shot with, a standard...

Last post

Wow, I thought that tutorial was long forgotten by now. Good to see that people are still finding it to be useful.:)

Thanks to the random cannon...

12 Replies

4689 Views

Last post by jhalek90
Mon Sep 12, 2011 5:06 pm
How to Cast an epoxy barrel?

Last post by jackssmirkingrevenge
Replies: 21
by Goats spudz » Tue Sep 06, 2011 12:34 am
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hey JSR how do i cast a barrel for my gun? like 6mm inner diameter and 15mm outer dia.

Last post

You can still incorporate the brass barrel into this design.

Here's the mould I made to cast a similar design:
21 Replies

6920 Views

Last post by jackssmirkingrevenge
Wed Sep 07, 2011 10:44 pm
dial indicator for mill alignment

Last post by ramses
Replies: 15
by jackssmirkingrevenge » Tue Sep 06, 2011 9:26 am
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One for the accomplished machinists, can I do this on my 8 direction mill with this?

Last post

They seem a little on the cheap side, no problems with them?

For the record, several people use the at work to check fuel pump bearings out of the...
15 Replies

5112 Views

Last post by ramses
Tue Sep 06, 2011 4:15 pm
fire extingusher tanks, have alot of em. selling.

Last post by jsefcik
Replies: 19
by jhalek90 » Tue Aug 23, 2011 11:43 am
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As the title says, i picked up about 15 fire extinguisher tanks, and am just wondering if anyone wants to buy one, or a few.

They are a variety of...

Last post

That removes the valve core, not the valve body. The valve body is welded to the tank.

well yea,
19 Replies

5947 Views

Last post by jsefcik
Mon Sep 05, 2011 12:42 pm
Making a hammer (valve).

Last post by Gippeto
Replies: 5
by warhead052 » Thu Sep 01, 2011 2:45 pm

First post

Does anyone have any tips for making a hammer? I am going to try the 2d version, nails on a board with various types of hammers, and see which works...

Last post

Kinetic energy opens the valve...momentum affects dwell time.

More efficient designs utilize a lighter striker and same or stronger spring. Lighter...

5 Replies

1729 Views

Last post by Gippeto
Fri Sep 02, 2011 8:47 pm
sanding drum piston

Last post by mattyzip77
Replies: 12
by cornflake_81 » Mon Apr 14, 2008 2:19 am

First post

I snagged a cheap set of four sanding drums for my drill press at Harbor Freight the other day...just your basic sanding sleeve around a rubber...

Last post

Wow!! I know this thread is extremely old, however I thought I would comment for new guys looking for a easy, pre made piston. I have not used one,...

12 Replies

6122 Views

Last post by mattyzip77
Fri Aug 26, 2011 2:10 pm
A little social experiment

Last post by SniperNinja
Replies: 42
by Fnord » Wed Apr 06, 2011 6:19 pm
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Just some idea I had the last time I made a run to home depot.

What you need:
1. A permanent marker
2. Your local hardware store

I'd be curious to...

Last post

Added me. I have a house in Fallbrook and Murrieta, but only put 1.
42 Replies

13308 Views

Last post by SniperNinja
Wed Aug 24, 2011 10:52 pm
How to flatten PVC Pipe

Last post by mattyzip77
Replies: 35
by meatballs » Mon May 07, 2007 1:41 pm
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This is a simple easy way to get sheets of pvc.

Materials:
-PVC pipe
-An oven
-A saw
-Two flat surfaces (plywood, sheet metal, etc) to...

Last post

WOW!!! Tech that video was amazing!! That is so awesome how they do that!! Its basically just taking your time, and heating all parts of the pipe...
35 Replies

56560 Views

Last post by mattyzip77
Tue Aug 23, 2011 3:27 pm

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