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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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First post

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

1579977 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

756314 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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First post

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

411934 Views

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

Topics

recent trend of design

Last post by iknowmy3tables

by iknowmy3tables » Fri Jan 11, 2008 11:17 pm

since clide's hear design there has been a trend twords aiming at an intergrated valve/bolt designs with possibility in auto loading
specifically...

0 Replies

1918 Views

Last post by iknowmy3tables
Fri Jan 11, 2008 11:17 pm
Another semi/full auto idea...

Last post by iknowmy3tables
Replies: 2
by BigJon » Fri Jan 11, 2008 9:41 pm

First post

I'm not sure if this has been thought of before but I came up with this a few days ago and it sounded good then so please tell me what you think of...

Last post

well its really just like a paintball gun setup with the auto reseting hammer valve and stuff if you search through all the paint ball gun designs...

2 Replies

2713 Views

Last post by iknowmy3tables
Fri Jan 11, 2008 10:06 pm
Possible new manufacturer of rifled barrels!!!

Last post by DYI
Replies: 34
by SpudGunGuy » Thu Jan 10, 2008 9:37 am
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In my opinion, the all time great Spud Gun site has to be The Spudgun technology center. Unfortunately though, the owner has decided to close up shop...

Last post

Wow, I only read your post in a quote...

Sorry about that dude, I never even checked to see first. Sarcasm detectors are all well and good, but they...
34 Replies

9458 Views

Last post by DYI
Fri Jan 11, 2008 7:52 pm
C:B calculator??

Last post by DYI
Replies: 13
by sjog » Thu Jan 10, 2008 7:40 pm

First post

Where is the calculator for C:B ratios, not RatCalc and not GGDT the other one.Some one on this site set up, I think??
I have looked and looked....

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Shooting plasma as ammunition would involve massively powerful magnetic containment systems, and is currently out of reach to anything but well...

13 Replies

2592 Views

Last post by DYI
Fri Jan 11, 2008 5:11 pm
Pump marble gun

Last post by jackssmirkingrevenge
Replies: 5
by Gunner » Thu Jan 10, 2008 12:44 pm

First post

Well,I just sketched this and as you can see the trigger mechanism is not ready,but I hope that you will understand how it works. :D Would it be...

Last post

Valid points but I think a 1 litre volume is still too low, I would go for at least 3 times that amount.

5 Replies

1999 Views

Last post by jackssmirkingrevenge
Fri Jan 11, 2008 1:08 pm
Two questions on pressure ratings and paint.

Last post by nivekatoz
Replies: 9
by hotknife ralphie » Thu Jan 10, 2008 6:10 am

First post

Good evening all, I have two questions (Yes I had several searches but for some reason I seem unable to get any results, random pages always appear....

Last post

I would use truck bed liner spray paint that stuff is really strong......

9 Replies

2486 Views

Last post by nivekatoz
Fri Jan 11, 2008 8:45 am
Found Brass Tubing,Now What?

Last post by MrCrowley
Replies: 39
by rna_duelers » Thu Jan 10, 2008 2:51 am
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I found about 2 meters of 3/4-20mm brass tubing under my house about a day ago,it looks really nice when its been buffed up so I'm thinking of using...

Last post

Yeah i've heard about them being slow and being fast, didn't BtB mod one?
39 Replies

5309 Views

Last post by MrCrowley
Fri Jan 11, 2008 5:11 am
101 Ways (Not Really) To Use a Camera Flash...

Last post by nz_cannons
Replies: 21
by mark.f » Sat Jan 05, 2008 12:48 pm
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I've been a bit bored lately, and started playing around with high voltage, so I figured I'd go ahead and compile a paper on all the possible ways I...

Last post

I did some playing round with these circuits a while back, I wrote a wee how-to on using one to make a spark, it's floating around in the how-to...
21 Replies

12300 Views

Last post by nz_cannons
Thu Jan 10, 2008 6:58 pm
Where can I get 2 1/2" sch 40 PVC for tennis balls?

Last post by williamfeldmann
Replies: 4
by Nuker » Tue Dec 18, 2007 12:33 pm

First post

I am looking for 2 1/2 sch 40 PVC for tennis balls and the fittings to reduce it to a male threaded 1

Ever since the demise of Spudtech I have no...

Last post

If you are not interested in using if for any pressure capabilities, ie chamber, or behind the valve, you can use 2 1/2 inch electrical conduit. It...

4 Replies

2364 Views

Last post by williamfeldmann
Thu Jan 10, 2008 11:04 am
For the Record... Water Jet > Machining

Last post by MrCrowley
Replies: 1
by socoj2 » Mon Jan 07, 2008 7:19 pm

First post

I had to get some brackets made for the autoloader...

Machine shop wanted $600 .

Water Jet shop wanted $75..

Last post

Well i'm glad you found a cheap solution.
Sounds like a good place to get alot of stuff done for cheap prices.

1 Replies

1418 Views

Last post by MrCrowley
Mon Jan 07, 2008 8:27 pm
what next?

Last post by schmanman
Replies: 5
by schmanman » Mon Dec 24, 2007 12:43 pm

First post

ok, I'm brainstorming, and need some ideas.

my bb rifle is pretty much like it was originally, but with a better, lighter piston I just made...

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I'm working ona simmilar gun hat is semi auto. I built two other simmilar guns this weekend for my friends, and i had most of the parts, so it only...

5 Replies

1960 Views

Last post by schmanman
Sun Jan 06, 2008 7:42 pm
new double barrel design

Last post by Ragnarok
Replies: 25
by bangmikkelbang » Sun Jan 06, 2008 4:21 am
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heres my new double barrel design. tell me what you think

Last post

If I were doing a double barrel spudgun, I would have two individually triggered barrels - two simultaneously fired barrels would be better merged...
25 Replies

15804 Views

Last post by Ragnarok
Sun Jan 06, 2008 7:03 pm
Reference for Taping NPT threads

Last post by jrrdw
Replies: 5
by socoj2 » Sun Jan 06, 2008 4:57 pm

First post

Have you guys found a reference for what size drill bit to use, when tapping threads for different NPT sizes..

1/8
1/4
3/8
1/2
3/4

Last post

Tapered drill bits/reamers work better. Once you get near the back of the pipe tap, they get real hard to turn in, if your tapping a straight hole.

5 Replies

7961 Views

Last post by jrrdw
Sun Jan 06, 2008 6:08 pm
How do I make a breech loader?

Last post by ralphd
Replies: 5
by idiotfactory » Sat Jan 05, 2008 6:30 pm

First post

I've made my share of conventional (shove the ammo down the barrel like a musket) guns, but I am trying to make a breech loader for faster reloading....

Last post

Well, you will need to install a bushing with a threaded center at the end of your combustion chamber that is bigger than your intended barrel. I'm...

5 Replies

1988 Views

Last post by ralphd
Sun Jan 06, 2008 12:37 am
Anyone have access to a Flow Jet?

Last post by socoj2
Replies: 2
by socoj2 » Sat Jan 05, 2008 8:41 pm

First post

I need some stuff cut and the local machine shop wants $500 because they dont have a flow jet and it would have to be done with tools...

So anybody?

Last post

I sent him a Pm over a week ago and never heard anything. So i wasnt sure if he was still around.

2 Replies

2370 Views

Last post by socoj2
Sat Jan 05, 2008 11:20 pm
How To: Block Off Large Bore Pipe

Last post by MrCrowley
Replies: 12
by MrCrowley » Sat Jan 05, 2008 12:00 am

First post

Well in this how-to, i'll show you my way of sealing off large bore pipe for a stock or something similar.

I'll be using a 2 tee as the fitting I...

Last post

@Bigbob

Yeah I can't seem to find plugs in NZ for some reason :?

@grumpy

Because i'm limited to 115psi by my compressor and thought I may as...

12 Replies

6485 Views

Last post by MrCrowley
Sat Jan 05, 2008 10:09 pm
propertys of hot glue

Last post by spudy buddy
Replies: 26
by spudy buddy » Fri Jan 04, 2008 7:17 pm
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hey i searched the forums but couldn't find anything about this. my question is if anyone knows what happens when hot glue dries(shrink, expand,...

Last post

i burnt myself on a piece of semi molten glass. lol. it hurt and i did it cause after about 15 seconds after it was white hot it goes back to looking...
26 Replies

6584 Views

Last post by spudy buddy
Sat Jan 05, 2008 8:33 pm
Fred, posting

Last post by MrCrowley
Replies: 12
by fred » Wed Jan 02, 2008 10:45 am

First post

Hi, all. I have to admit I have been lax about posting new items. It is winter up here and things are on hold for a while. I have a lot to post and...

Last post

They're not fuzzy, you just have to clcik on them to enlarge them :)

12 Replies

4982 Views

Last post by MrCrowley
Sat Jan 05, 2008 3:35 pm
Poured Epoxy for complicated gas ports.

Last post by TwitchTheAussie
Replies: 26
by SPG » Thu Jan 03, 2008 11:47 am
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So finally I've decided to build a concept, this one in fact

Only thing is as you can see there's a set of fairly complicated ports to create...

Last post

I don't really have any secrets here, forums are for sharing :)

I do believe so far Ive uncovered two illegitimate children. And not knowing where...
26 Replies

6224 Views

Last post by TwitchTheAussie
Fri Jan 04, 2008 11:36 pm
Cloud

Last post by ALIHISGREAT
Replies: 6
by pat123 » Fri Jan 04, 2008 4:39 pm

First post

I am planning to make my first cloud but most clouds that I have seen are hooked up to an external air tank, I want a air tank on the gun so I can...

Last post

ok thanks I am thinking about making it single shot with some kind of clip. I am trying to think of a way to attach a regular airsoft gun clip and a...

6 Replies

3161 Views

Last post by ALIHISGREAT
Fri Jan 04, 2008 8:27 pm
Where r u guys getting your 4" Pressure rated PVC fitti

Last post by socoj2
Replies: 14
by socoj2 » Thu Jan 03, 2008 12:11 pm

First post

So home depot doesnt have jack. for SCH40 4 fittings.

Neither does Ace...

Maybe im looking at this wrong... Does it have to be sch40? if it isnt...

Last post

I had the same problem of getting 4 -2 reducers. I got 4 couplings and 4 -2 bushings off McMcaster. They are pretty expensive for fittings (about $8...

14 Replies

3755 Views

Last post by socoj2
Fri Jan 04, 2008 4:17 pm
Hookes Law and Pressure - I'm confused, can you help.

Last post by Pilgrimman
Replies: 10
by SPG » Wed Jan 02, 2008 9:58 am

First post

The force in the compression spring is found from Hooke's Law,

F=k * (L free - L def )

where

k is spring constant
L free is the uncompressed...

Last post

If the piston has 1/4 of it being acted upon by air, you want a spring with a k of about 54 lb./in.

1/4 in.^2 * 110 ~= 27 lbs.
27 lbs. / 1/2 = 54...

10 Replies

4914 Views

Last post by Pilgrimman
Thu Jan 03, 2008 3:14 pm
valveless marble machinegun

Last post by jackssmirkingrevenge
Replies: 22
by jackssmirkingrevenge » Fri Nov 30, 2007 12:32 am
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This is a combination of my ideas for a valveless design for hard spherical projectiles with my interpretation of this design by pvcmaster.

The...

Last post

The pin doesn't have to support the whole force of the marble, just jam it in place, so I don't think it would need *that* much energy.
22 Replies

23582 Views

Last post by jackssmirkingrevenge
Thu Jan 03, 2008 3:04 pm
Possibly stupid, possibly brilliant idea

Last post by jackssmirkingrevenge
Replies: 10
by PVC Arsenal 17 » Wed Jan 02, 2008 7:28 pm

First post

Most likely stupid. It was an idea had while falling asleep last night.

Anyway, I can't explain it much better than the picture does.

There is a...

Last post

One day you might get lucky, like how JSR gets lucky every morning he wakes up and posts another way to achieve semi-auto. :D

It's a bit like...

10 Replies

3315 Views

Last post by jackssmirkingrevenge
Thu Jan 03, 2008 6:30 am
Record Breaker

Last post by jackssmirkingrevenge
Replies: 77
by Novacastrian » Mon Dec 24, 2007 7:34 am
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As a true indication of how many members are truly active i thought it would be interesting to see if we could break the 399 members online for 31/1/...

Last post

I really should post more responsibly hehe :P :D
77 Replies

20145 Views

Last post by jackssmirkingrevenge
Thu Jan 03, 2008 1:21 am

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