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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

1341556 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

82765 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

993030 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

279144 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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First post

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...

Last post

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

288652 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

395177 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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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

5346576 Views

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

Topics

Coin Roll Tubes

Last post by irisher
Replies: 2
by Cannibal Corpse » Sun May 24, 2009 9:40 pm

First post

I was at the dollar store today and found a pack of 35 coin roll tubes for a buck and they looked like great sabots. Well the ones for quarters (only...

Last post

If your looking for 3/4 then try pennies.

2 Replies

1987 Views

Last post by irisher
Mon May 25, 2009 12:55 am
Home depot aluminum tubing

Last post by daccel
Replies: 12
by daccel » Thu May 21, 2009 11:18 pm

First post

I'm considering using it as a chamber and am trying to figure out the burst pressure. But the manufacturer's website doesn't give any details.

What...

Last post

Alright, I'll put the coax on hold for this build and do over under so I can use smaller copper.

Good idea with the copper inside aluminum, I will...

12 Replies

6729 Views

Last post by daccel
Sun May 24, 2009 12:16 am
Ammo and Cannon Names

Last post by Hotwired
Replies: 10
by deathbyDWV » Tue May 19, 2009 5:18 pm

First post

Hey guys. I was wondering if you have any cool ideas on ammo for my cannons. I have one with a 2 inch barrel and one with a 1.25 inch barrel. I was...

Last post

The perfect name for the biggest cannon.

The Compensator

10 Replies

3599 Views

Last post by Hotwired
Sat May 23, 2009 9:04 pm
Solid Nylon Slugs

Last post by john bunsenburner
Replies: 32
by nicholai » Thu Jan 12, 2006 6:27 am
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well, i work in a factory on machines that make plastic parts and pipe(Thermoplastic injection/extrusion molding to be a smartass :wink: ). Well i...

Last post

Oh ok, thanks for that rag, did some one notify a mod about the troll like post? If they didn't notice already.
32 Replies

13469 Views

Last post by john bunsenburner
Fri May 22, 2009 9:11 am
Just a heads up for Petsmart ammo

Last post by jrrdw
Replies: 1
by jmccalip » Thu May 21, 2009 4:03 pm

First post

If you go in the cat section they sell mini tennis balls for cats that are a perfect fit for 1.5 SDR21. There only $1 each, and there great for...

Last post

This was recently posted, but thanks just the same.

1 Replies

1414 Views

Last post by jrrdw
Thu May 21, 2009 4:27 pm
paintball barrel size

Last post by Biopyro
Replies: 8
by beans » Thu May 14, 2009 2:53 am

First post

I made my cannon with a removable barrel for just this situation. I want to start shooting paintballs, but I have no idea how big they are and what...

Last post

Good idea doing the fit. That always works well for me :) O-rings would help, but aren't necessary, depends how advanced you want it. Type breech in...

8 Replies

2428 Views

Last post by Biopyro
Mon May 18, 2009 3:41 pm
airburst round

Last post by SEAKING9006
Replies: 3
by covey12 » Fri May 15, 2009 8:57 pm

First post

hey i was wondering if anyone new a way to make an airburst round, doesn't have to be explosive, but one that opens up in the air, not right out of...

Last post

(As if speaking to the topic of 'Airburst' itself)
Hello, old friend. How are you?

Anyway, yes I did make a working AB system. And though the shots...

3 Replies

2859 Views

Last post by SEAKING9006
Sun May 17, 2009 4:42 pm
Easiest way to make a barrel support for a large cannon?

Last post by Explosive
Replies: 6
by jmccalip » Fri May 01, 2009 11:53 pm

First post

4 Chamber
2 barrel(OD)

I was thing two 4 saddle tees and two 2 saddle tees(do they make them?), but that might be too expensive. I tried making...

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I have a bipod down by my fire pit, I'll take a pic for you sometime.

6 Replies

2757 Views

Last post by Explosive
Sun May 17, 2009 12:25 pm
heat conducting glue??

Last post by POLAND_SPUD
Replies: 14
by POLAND_SPUD » Tue May 12, 2009 2:53 pm

First post

what can I use as a substitute of thermal glue?? (you know the thing used to glue the CPU and radiators)

I won't use thermal glue becasue it's very...

Last post

yeah that would be the most effective method at least it seems so... I think that drilling the holes would take a lot of time

but it seems rather...

14 Replies

5995 Views

Last post by POLAND_SPUD
Sun May 17, 2009 10:27 am
Brass Pressure Rating

Last post by maverik94
Replies: 15
by maverik94 » Thu May 14, 2009 4:09 pm
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Ok, I just spent a whopping $13 on some brass pipe and a brass cap. I was just wondering how much pressure this can stand up to. It is 4 long 3/4...

Last post

thanks for the info yall. I have taken mine to 130 psi so far and it seals fine with tefflon tape.
15 Replies

6258 Views

Last post by maverik94
Fri May 15, 2009 6:09 pm
Model rockets

Last post by Moonbogg
Replies: 9
by Easterbunny » Mon May 11, 2009 7:23 pm

First post

A friend and I are having a 2 week build off to a range competition, reading through the forms I found many people suggesting darts or golf balls....

Last post

I would love to have an official range contest. I know just the place to go, for me at least. The dry lake bed at Calico California. Thats about the...

9 Replies

4320 Views

Last post by Moonbogg
Fri May 15, 2009 12:30 am
Brass Questions???....

Last post by THUNDERLORD
Replies: 6
by THUNDERLORD » Thu May 14, 2009 1:48 pm

First post

So...
I was using a pressure washer and it was 3200psi ( water ),
most of the fittings on it were brass.

I have noticed several times that the...

Last post

What was the look of the fittings on the welding tank? Where they smooth and ground down, or were they covered in very small bumps and pock marks the...

6 Replies

2465 Views

Last post by THUNDERLORD
Thu May 14, 2009 8:00 pm
suppressor help

Last post by THUNDERLORD
Replies: 9
by roughboy » Sun May 10, 2009 12:10 pm

First post

Can you guys tell me if this is correct or not. if not please explain why.
This will not be a fixed suppressor it will be a removable one.

Last post

Another and last question. how big should the suppressor housing be? The barrel of my gun is 1/2'' so should the housing be inch and a half or 2''?...

9 Replies

14869 Views

Last post by THUNDERLORD
Thu May 14, 2009 1:25 pm
4" to 2" bushing or reducer nsf-pw?

Last post by brettdotcom14
Replies: 3
by brettdotcom14 » Sat May 09, 2009 2:04 am

First post

where can i find one of these that are slip to slip. only one i found is a spg

Last post

any reducers larger then 2 i can find are all dwv. i wasnt looking for a reducing coupling specifically just something that went from 4 to 2 without...

3 Replies

2566 Views

Last post by brettdotcom14
Sat May 09, 2009 4:09 pm
What to do with all this copper???

Last post by jeepkahn
Replies: 30
by jeepkahn » Tue May 05, 2009 3:22 pm
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A friend of mine who works at a welders supply shop just gave me a 10ft stick of 1.5 type L, a 10ft stick of 1.25 type L, AND a 10ft stick of 1 type...

Last post

Thats the one....

Yeah, I'd thought about the whole surface area stepdown method but volumes would indeed get larger... I'll prolly end up making a...
30 Replies

10462 Views

Last post by jeepkahn
Fri May 08, 2009 10:01 am
Quick epoxy question

Last post by inonickname
Replies: 2
by inonickname » Thu May 07, 2009 3:37 am

First post

Well in a build that will be used at 100 psi, occasionally 300 psi I have been so far using araldite extra strength epoxy. (stays very pliable for 1+...

Last post

I decided just to use high strength, thanks anyways.

There's plenty of time for it to cure, that's something you have to respect when using epoxy. I...

2 Replies

1313 Views

Last post by inonickname
Thu May 07, 2009 5:14 am
Cracking pressure ofa standard schrader???

Last post by inonickname
Replies: 11
by jeepkahn » Tue May 05, 2009 10:27 am

First post

Anyone know it off the top of your head???

TIA

Last post

Yep, I've also found the average cracking pressure to be 70 psi, give or take a few. If you want no cracking pressure then get the cores with an...

11 Replies

3150 Views

Last post by inonickname
Tue May 05, 2009 8:22 pm
Another Dumb Question... :)

Last post by inonickname
Replies: 6
by jeepkahn » Tue May 05, 2009 11:32 am

First post

I'm thinking about making a stirrup pump , but I was going to use a piece of my 3/4 sch120 for the pump body... I'm only looking for 500ish psi, and...

Last post

For a check valve you could use a schrader, but get one of the ones with an external spring so it can be modified. They should hold up just fine at...

6 Replies

6372 Views

Last post by inonickname
Tue May 05, 2009 8:18 pm
Anyone use Rit Dye for coloring PVC parts?

Last post by Hotwired
Replies: 4
by jmccalip » Mon May 04, 2009 5:08 pm

First post

I remember back in my aquarium days we used it to color the pipes black to help hide them. It's so much better the krylon fusion since it's...

Last post

Looks kinda funky.

Could be lacking somewhat compared to a can of spray for long piping.

4 Replies

3441 Views

Last post by Hotwired
Mon May 04, 2009 8:50 pm
Ballvalves and High Pressure Air, risk ? oh also Diagphrams

Last post by al-xg
Replies: 11
by al-xg » Sun May 03, 2009 4:50 pm

First post

EDIT: copied from 10th post

Oh and does anyone know what the approxiamte safety margin on a diapragm QEV is ? I'd imagine it varies a lot, but...

Last post

Thanks for the information twizi.

The 1/8 BV aren't for piloting, and won't even be used on the same setup as the Diaphragm QEVs.

If any one else...

11 Replies

4698 Views

Last post by al-xg
Mon May 04, 2009 5:20 pm
suppressor question

Last post by Technician1002
Replies: 7
by roughboy » Sun May 03, 2009 1:42 pm

First post

Will your pneumatic cannon have less power/velocity by adding a suppressor?

Last post

well if I may add something...
...a suppressor won't make accuracy worse.. in fact it will improve it as it greatly reduces muzzle blast which might...

7 Replies

6761 Views

Last post by Technician1002
Mon May 04, 2009 11:58 am
shot gun style spread shot

Last post by Ragnarok
Replies: 5
by facist7 » Fri May 01, 2009 11:39 pm

First post

my cannon has an 18 inch ling chamber, a 24 inch barrle and one set if sparkers.
my question is, how do i shoot multiple paint balls or airsft b.b.s...

Last post

That's a pretty large spread. 10 feet diameter spread at 50 feet range - What do you need that for?

I don't expect that you'll get that naturally. I...

5 Replies

7571 Views

Last post by Ragnarok
Sat May 02, 2009 8:21 am
hand grip

Last post by Biopyro
Replies: 11
by roughboy » Fri May 01, 2009 8:22 am

First post

could anyone tell me what is being used to make those hand grips, is it epoxy, or plaster of paris. or bondo ect.?

Last post

Well microwaving may not be as effective as you'd think.
And some of those same bonds are present in polymorph. So I can tell you a microwave works...

11 Replies

4438 Views

Last post by Biopyro
Sat May 02, 2009 3:11 am
air soft bullet

Last post by twizi
Replies: 11
by roughboy » Tue Mar 31, 2009 11:58 pm

First post

Anyone know what to use for a barrel that fits those air soft bb's? because i'm thinking of building a gun and using those air soft bb's as the...

Last post

i need to get a 6mm barrel i have 8mm barrel at 400psi i get 700 fps so yeah
i am broke right now, but once i get a barrel you'll see my sniper...

11 Replies

4401 Views

Last post by twizi
Thu Apr 30, 2009 9:20 pm
compressor

Last post by Technician1002
Replies: 20
by roughboy » Tue Apr 28, 2009 7:59 pm
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How much is the cheapest, brand new, AC compressor cost and also how much is the cheapest, brand new, fridge cost?

i've googled it and all it shows...

Last post

Excellent test. Do you have a AC clamp on Ammeter? The power draw would be good to know. Also pay attention if the motor current goes up enough and...
20 Replies

9642 Views

Last post by Technician1002
Thu Apr 30, 2009 1:48 pm

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