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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

1079598 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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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

553168 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

300246 Views

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

Topics

Legal problem.

Last post by POLAND_SPUD
Replies: 15
by jake321 » Tue Oct 16, 2012 11:48 pm
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I it legal to have a homemade air rifle in QLD AU? I would not care most of the time but my dad will not let me make one if I don't fined out it is...

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especially if your a minor.
it's better to be a minor as far as law is concerned
well better than adult at least
15 Replies

6264 Views

Last post by POLAND_SPUD
Thu Oct 18, 2012 11:31 am
custom suppressor for small calibres

Last post by jackssmirkingrevenge
Replies: 95
by jackssmirkingrevenge » Sun Nov 11, 2007 7:21 pm
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I just wanted to share this design I'm making for a friend's 0.22 Shinsung Career 707 air rifle. This airgun puts out a powerful blast of air that...

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What's a grub screw? not familiar with the term.

I'm closer to the UK than the US, so that's the term which comes naturally :)
95 Replies

48447 Views

Last post by jackssmirkingrevenge
Tue Oct 16, 2012 11:22 pm
Interesting article: P-lab or Pneumatic Cannon?

Last post by MrCrowley
Replies: 7
by MrCrowley » Sat Oct 13, 2012 4:30 pm

First post

Anyone know how a pneumatic cannon could be mixed up with equipment for a methamphetamine lab? Seeing as they mention a chemical process I'm thinking...

Last post

The police don't know anything about external ballistics remember. If a bullet fired at 400m/s can go 4km then some meth fired at a similar velocity...

7 Replies

2392 Views

Last post by MrCrowley
Sat Oct 13, 2012 6:08 pm
Mythbusters SO9E18 Drain disasters

Last post by matti
Replies: 7
by *###* » Sun Oct 07, 2012 12:32 pm

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About 6 minutes in The mythbusters are doing a small scale test to see if the fumes in a sewer are ignited will it result i a man hole cover being...

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Here:

And here is one cannon using the shchelkin spiral for DDT (propane/air mix):

7 Replies

3383 Views

Last post by matti
Mon Oct 08, 2012 12:42 pm
Seismic air cannon article link

Last post by jackssmirkingrevenge
Replies: 10
by Solar » Sun Sep 30, 2012 4:43 pm

First post

I wonder how big these are.

Last post

how is that more of a pop-off? it would be more of a pop off valve if it opened at X pressure but it has a control valve

comparison fail

The flow...

10 Replies

4607 Views

Last post by jackssmirkingrevenge
Tue Oct 02, 2012 7:52 am
CD launcher

Last post by jackssmirkingrevenge
Replies: 15
by gyrotech » Fri Sep 28, 2012 5:37 pm
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Has anybody ever though to create a CD launcher? A very flat barrel with one side having rubber to put a spin on the cd's...

It would be insane.

I...

Last post

A converted nailgun as previously suggested is most likely the easiest solution.
15 Replies

7033 Views

Last post by jackssmirkingrevenge
Sun Sep 30, 2012 11:39 pm
pipe find

Last post by MrCrowley
Replies: 5
by ferret_guy » Tue Sep 25, 2012 8:44 pm

First post

while dumpster diving I found 8 DR-18 vinyl tech PVC pipe i was poking around and could not find any fittings at all but did find some demitions and...

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I found this, witch lists the pipe at 235 PSI working pressure I think this would be perfect for my next pneumatic but I can't find any fittings...

5 Replies

1896 Views

Last post by MrCrowley
Wed Sep 26, 2012 1:55 pm
Conceptual Artillery Field Piece

Last post by jackssmirkingrevenge
Replies: 3
by Berkut » Mon Sep 24, 2012 3:36 am

First post

I have an idea for a large artillery field piece. I am reaching out for help from the community because I have ran hundreds of simulations in GGDT...

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I mentioned the 500 psi to demonstrate how inefficient the current design was, I don't really want to run it at such a dangerously high pressure....

3 Replies

1981 Views

Last post by jackssmirkingrevenge
Mon Sep 24, 2012 3:29 pm
which material is harder ,hss tool or metal file ?

Last post by far_cry
Replies: 11
by far_cry » Thu Sep 20, 2012 11:45 pm

First post

as the title say's which is harder and give me more cutting before it start's to wear .

i want to use this for head cutter

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Remember that you must be careful when grinding the HSS bit. If it starts to discolor, it is too hot. If it gets to about blue, you have drawn the...

11 Replies

7624 Views

Last post by far_cry
Sat Sep 22, 2012 12:20 pm
How to: custom caliber ammunition

Last post by wyz2285
Replies: 12
by wyz2285 » Wed Sep 05, 2012 6:27 am

First post

Simple+cheap way to make a perfect match sabot for sub-caliber ammo with custom size barrels :)

Last post

I was quite surprised at how effective and tough the sabots are. Although the wood was probably only radiata pine (i.e. a soft wood), I was pleased...

12 Replies

7034 Views

Last post by wyz2285
Wed Sep 19, 2012 8:15 am
air conditioner compressor

Last post by jackssmirkingrevenge
Replies: 6
by qwert123 » Thu Sep 06, 2012 8:04 pm

First post

so i was given an old ac window unit :D which had a broken radiator and fan, but when turned on i am able to hear the compressor hum. anyway, long...

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You can show your appreciation by building a nice HPA launcher ;)

6 Replies

3255 Views

Last post by jackssmirkingrevenge
Mon Sep 10, 2012 12:04 am
interesting video of suppressors

Last post by jackssmirkingrevenge
Replies: 1
by JDP12 » Fri Sep 07, 2012 12:57 am

First post

Think I beat JSR to this one..

off of ENDO, one of my favorite blogs, a cool video showing how suppressors actually sound..... which for those of...

Last post

Think I beat JSR to this one..

So you did :) at work so I can't really watch it with sound on.

It's interesting to compare dB levels, but what...

1 Replies

1440 Views

Last post by jackssmirkingrevenge
Fri Sep 07, 2012 3:33 am
chamber size

Last post by mattyzip77
Replies: 5
by hawktalk » Tue Sep 04, 2012 12:25 pm

First post

I need some help finding out what sized chamber i would need for shooting a 15mm object out of a 100cm barrel

Last post

In other words I was trying to say you need to be more specific....

5 Replies

2225 Views

Last post by mattyzip77
Wed Sep 05, 2012 4:30 pm
How to take apart quick-disconnects

Last post by PotatoEnemy17

by PotatoEnemy17 » Tue Sep 04, 2012 9:54 am

Hi everyone!, The other day I suddenly got this urge to take something apart, and a quick-disconnect sitting on my workbench caught my eye. The...

0 Replies

6154 Views

Last post by PotatoEnemy17
Tue Sep 04, 2012 9:54 am
Triggers aughh

Last post by iloveairguns
Replies: 15
by iloveairguns » Sat Sep 01, 2012 4:50 am
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So.. just asking guys opinion of this airgun sketch up look up the image and comment if i should improve or change, etc. something and it would work...

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i could try the spool valve ::D: but ive got another plan too, which affiliates with the user jeepkahn's invention, the homemade schrader valve cus...
15 Replies

7753 Views

Last post by iloveairguns
Tue Sep 04, 2012 7:39 am
Swivel Stands?

Last post by jackssmirkingrevenge
Replies: 1
by NP Carling26 » Mon Sep 03, 2012 12:31 am

First post

I'm looking to purchase or construct a strong swivel stand for my pneumatic cannon. Currently I have an over/under design, with a 4 pressure chamber...

Last post

Bit pricey though, but you get the idea if you want to make your own ;)

1 Replies

1227 Views

Last post by jackssmirkingrevenge
Mon Sep 03, 2012 2:07 am
How to: .50 cal semi-auto

Last post by PotatoEnemy17
Replies: 25
by wyz2285 » Wed Aug 29, 2012 5:31 pm
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My mom told me to clean my room and I found out I have a couple of QEVs, 3-ways and cylinders all around, I thought I´d make something with them and...

Last post

Semi auto, power, ergonomics, all in one. Clearly something built by wyz2285 :D
25 Replies

14418 Views

Last post by PotatoEnemy17
Sun Sep 02, 2012 6:05 pm
Ignition question

Last post by Aturt
Replies: 8
by Aturt » Sat Sep 01, 2012 3:22 pm

First post

I was just wondering why people use high voltage ignition (tasers) for their spud guns. Is it just so the launcher is more reliable (so there are...

Last post

Actually, the mix that I'm referring to is the mix number in a hybrid. Not the fuel-air ratio. A 1x mix is at atmospheric pressure. A 10x is ten...

8 Replies

6340 Views

Last post by Aturt
Sun Sep 02, 2012 2:39 am
Newbie Combustion Questions :)

Last post by 8tonsemi
Replies: 1
by lava98 » Sat Sep 01, 2012 10:46 am

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Hey guys, completely new to this forum. I'm ready to build my first combustion spud gun! :) Although I have done a lot of research, I have some...

Last post

The ball valve is a cool idea but I think it would be unecessary. And for your syringe questions check this out.

And for the screws I think you...

1 Replies

1476 Views

Last post by 8tonsemi
Sat Sep 01, 2012 12:07 pm
ideas for a noise maker cannon

Last post by D_Hall
Replies: 11
by swires » Tue Aug 28, 2012 10:59 pm

First post

My two boys are playing high school football in the Texas panhandle and our mascot is a pirate. I have been looking to build or purchase a cannon to...

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What Fnord said. Although depending on your budget I might upgrade the steel conduit to sch 40 pipe. Not that there's anything wrong with the...

11 Replies

20689 Views

Last post by D_Hall
Fri Aug 31, 2012 12:34 pm
Spudtech Rifling

Last post by jackssmirkingrevenge
Replies: 1
by limbeh » Thu Aug 30, 2012 11:18 am

First post

Hi guys,

Does anyone here have a 1.5 Spudtech rifled barrel? I'm thinking of making my own, and I'd really appreciate if someone could help me...

Last post

If you want to use it for potatoes, you need a fairly deep and wide groove given the soft nature of the material.

1 Replies

1548 Views

Last post by jackssmirkingrevenge
Thu Aug 30, 2012 12:36 pm
Help needed: Loading mechanism (modeling+machining)

Last post by dewey-1
Replies: 36
by PaperNinja » Tue Aug 21, 2012 7:07 am
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I've drawn up what I need made :)

I'm sorry if you can't read it super well, just ask me to clarify! I did it by hand, but I'm pretty sure it's...

Last post

Use 1/4 x 1/2 nylon threaded spacer on the air cylinder.
This will allow fine control for position adjust.
Note the 1/8 female Tee recommendation!...
36 Replies

10215 Views

Last post by dewey-1
Wed Aug 29, 2012 7:08 am
my new (old) valve system

Last post by jackssmirkingrevenge
Replies: 7
by far_cry » Sun Aug 05, 2012 4:39 pm

First post

after playing around with piston valve and 650 psi, i ended up trying to make things more quite .
silencer wont be that effective since you will end...

Last post

Bolt action rifle?

7 Replies

3845 Views

Last post by jackssmirkingrevenge
Sun Aug 26, 2012 1:02 am
How to Build a Rifling Machine

Last post by jrrdw
Replies: 10
by iknowmy3tables » Thu Oct 08, 2009 10:23 pm

First post

hey I came across this, it's a how to make a working antique rifling machine. glimpsing over it I pretty sure it's above my craftsmanship skills ,...

Last post

I'm impressed! I want one...

10 Replies

14583 Views

Last post by jrrdw
Thu Aug 23, 2012 4:54 pm
Need ammo recomendations

Last post by Crna Legija
Replies: 24
by beastmode986 » Thu Aug 09, 2012 11:24 am
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I just ordered another qev and i am going to build a 1/2'' shotgun I plan on using a 1/2 in piece of copper for the barrel. Can anyone recommend some...

Last post

i do like nipples indeed but not filled with silicone or caulking

As long as the surgeon did good work I don't mind silicone filled ones.
24 Replies

8370 Views

Last post by Crna Legija
Sat Aug 18, 2012 10:17 am

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