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Announcements

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

1123693 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

71860 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

899765 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

231254 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

250293 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

352805 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

5241217 Views

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

Topics

solder

Last post by roughboy
Replies: 7
by roughboy » Fri Apr 03, 2009 10:35 am

First post

Are those solder that can be used on STEEL safe on high pressures like 500-700psi?

Last post

Threaded fittings it is. Thanks guys!

7 Replies

2959 Views

Last post by roughboy
Sat Apr 04, 2009 1:49 pm
has anyone shot...

Last post by jackssmirkingrevenge
Replies: 4
by super spuder » Thu Apr 02, 2009 3:02 pm

First post

spent shell casings? I found a bunch of 22 shell casings that someone has shot and are empty. After taking it to the hardware store today after...

Last post

Jesus Jack, you're like a robotic encyclopedia :D

Not so sure about Asimov's laws :P :D

4 Replies

5916 Views

Last post by jackssmirkingrevenge
Thu Apr 02, 2009 10:42 pm
Lots of BBs for cheap

Last post by Maniac
Replies: 15
by jwilson7 » Mon Mar 30, 2009 12:46 pm
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Does anyone know a good place to get A LOT of 6 mm airsoft BBs for pretty cheap?

I've made a BBMG for use in airsoft wars and those things...

Last post

I think Evike has a nice sale on large amounts of bbs right now, check there.
15 Replies

6714 Views

Last post by Maniac
Wed Apr 01, 2009 9:49 pm
Rifled 1.5" and 2" barrels - Clear or ABS

Last post by inonickname
Replies: 2
by MaddMatt » Tue Mar 31, 2009 8:30 pm

First post

I've had my cannon for a couple of years now but I'm new here - VERY cool site! Tons of great info and resources!

My launcher is breech loading and...

Last post

Spudtech does rifled barrels, but I'm unsure about the sizes you want..best to just check it out and see.

2 Replies

1201 Views

Last post by inonickname
Wed Apr 01, 2009 4:10 am
Oxygen Construction Materials

Last post by jrrdw
Replies: 12
by CS » Sun Mar 29, 2009 6:26 pm

First post

If necessary I can go into the details of why I need help constructing a safe oxygen metering system, but for times sake not now.

Basically the...

Last post

Check out the gas systems used to deliver medical O2 and you should be golden. Without lots of studying, my guess would be valves using silicone...

12 Replies

3648 Views

Last post by jrrdw
Mon Mar 30, 2009 11:29 am
NEW Tiberius First Strike Paintball round (twice the range)!

Last post by Ragnarok
Replies: 20
by Antonio » Wed Mar 25, 2009 8:36 am
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Tiberius Arms First Strike, Over Double the Effective Range and 25 Times More Accurate! Its damn amazing, it will for sure revolutionize woods...

Last post

The drag coefficient of a sphere is about 1.2
I don't know where you got that number from, because all the tests I know of show spheres to have a Cd...
20 Replies

12753 Views

Last post by Ragnarok
Mon Mar 30, 2009 9:05 am
High Pressure flange

Last post by DonTheLegend
Replies: 4
by DonTheLegend » Wed Mar 25, 2009 10:36 pm

First post

I'm looking for a flange to use in a new hybrid, but I can't seem to find any rated past 300 psi. I've looked in the usual places (McMaster,...

Last post

Yea, I started that edit about 10 minutes after my original post when i realized it might not be clear enough. Thanks for the info though. Now its...

4 Replies

2550 Views

Last post by DonTheLegend
Thu Mar 26, 2009 2:22 pm
Socket set screw as foster slug

Last post by daccel
Replies: 3
by daccel » Wed Mar 25, 2009 1:40 am

First post

As the title says. It looks like the weight balance should work.

But what effect would the threads have on velocity and stability.. thoughts?...

Last post

Yeah I know the threads wouldn't induce rotation, as the 'rifling' on the real ones doesn't. Just curious whether the turbulence would eliminate the...

3 Replies

1799 Views

Last post by daccel
Wed Mar 25, 2009 9:19 am
aircon compressor help

Last post by rna_duelers
Replies: 17
by roughboy » Sun Mar 22, 2009 8:52 am
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so i got my compressor to work. I hooked a 300psi air hose onto the output copper pipe and on the other end i fittined an air chuck. i want to reach...

Last post

Just replace the hose,simple.If that doesn't fix the problem then you've got something else going on.See if you can get hold of some Car brake...
17 Replies

5663 Views

Last post by rna_duelers
Mon Mar 23, 2009 9:28 pm
Spray-Painting Gradients

Last post by clide
Replies: 10
by mark.f » Thu Mar 19, 2009 12:43 pm

First post

Just a general question that I think would be useful to me and others if answered.

So, everybody knows how to paint solid colors, and solid colors...

Last post

The chamber on my Slider gun was my first attempt at gradients. Not the best, but not horrible either. It is more gradual in real life than it...

10 Replies

13448 Views

Last post by clide
Sat Mar 21, 2009 10:11 pm
Suppliers Listing....

Last post by c11man
Replies: 1
by jeepkahn » Sat Mar 21, 2009 9:11 am

First post

Since I haven't seen this listed before in one post I thought I'd throw it out there...

www.mscdirect.com Orders before 8pm you recieve the next...

Last post

flexpvc.com is a very good source for unusual and normal fittings. all the fittings are pressure rated unless noted so it is very good for fittings....

1 Replies

1349 Views

Last post by c11man
Sat Mar 21, 2009 9:14 am
brass or copper

Last post by Gippeto
Replies: 10
by roughboy » Fri Mar 20, 2009 11:20 am

First post

which of these holds more pressure brass or copper?

Last post

I'm just going to throw my .02 in here.

Aren't brass pipes awfully expensive? Around here it's $8 for a six inch nipple (1/2 npt).

Sweating copper...

10 Replies

4556 Views

Last post by Gippeto
Fri Mar 20, 2009 10:18 pm
air hose and air chuck Help

Last post by roughboy
Replies: 5
by roughboy » Wed Mar 18, 2009 10:59 am

First post

what is the max psi on a direct airline chuck?

I just bought a 50foot, 300psi air hose. If i cut a lenght of 5 feet to use on my compressor will...

Last post

Let me rephrase that. what other fitting could i use instead of an air chuck because the pressures i'm working with is above 200psi. and as mark and...

5 Replies

2540 Views

Last post by roughboy
Fri Mar 20, 2009 2:20 pm
Found something y'all might like...

Last post by mark.f
Replies: 11
by pharmboy » Thu Mar 12, 2009 9:46 pm

First post

Well, while looking for new/exciting bits of PVC piping on the web, I ran across a sit featuring plumbing for spas and hot tubs. To say the least, I...

Last post

I think somebody on this site posted a cannon with multiple 3/4 SCH-80 barrels. I'll have to dig it up another time, though, as my usual search...

11 Replies

7904 Views

Last post by mark.f
Thu Mar 19, 2009 12:23 pm
Websites and Links for supplies

Last post by DonTheLegend
Replies: 6
by covey12 » Tue Mar 10, 2009 9:55 pm

First post

Hey guys, just realize there is not really a single topic on links, :idea: so id figure to make one, if anyone here has a good link for purchasing,...

Last post

Useful information on all things related to engineering

6 Replies

4849 Views

Last post by DonTheLegend
Wed Mar 18, 2009 10:04 pm
Hours of energy now!!! ammunition later!!!

Last post by nibbler125
Replies: 5
by grock » Sat Mar 14, 2009 1:15 pm

First post

hey, my friend drinks alot of those five hour energy thing, and i found that they fit with about 1/8 clearance in 1.5 inch pvc. their not real heavy...

Last post

you can fill them with flour so when you hit something it gives a nice little poof

5 Replies

2256 Views

Last post by nibbler125
Tue Mar 17, 2009 9:39 pm
Release valve to pilot a 1/4" QEV....

Last post by jeepkahn
Replies: 2
by jeepkahn » Fri Mar 13, 2009 7:18 pm

First post

Found this the other day on mscdirect and I just tried it as a pilot for my 1/4 qev and it works great and is extremely compact, and may actually...

Last post

Good find, basically saves you having to mount a whole blowgun :)

and even with 150psi it has a very light push/pull as a trigger... and it's only...

2 Replies

1281 Views

Last post by jeepkahn
Sat Mar 14, 2009 7:58 am
1" Sprinkler Valve to 2" PVC

Last post by psycix
Replies: 3
by tinkco86 » Wed Mar 11, 2009 9:30 pm

First post

I'm having a little bit of trouble finding the most efficient way to do this. I can't seem to find a reducer adapter that goes from 2 socket to 1...

Last post

If you cant find a 2->1 then try:
2->1,5 + 1,5-> 1
Or something like that.

3 Replies

1385 Views

Last post by psycix
Thu Mar 12, 2009 9:23 pm
Commercial rupture disks

Last post by rna_duelers
Replies: 9
by starman » Sun Jan 25, 2009 3:31 am

First post

I saw the Mythbusters use these rupture disks from a company called Oseco on one of their episodes earlier this evening to test for lethal explosive...

Last post

Which MDMA lab do you work in again JSR?

It would be good if we could find specs on the discs themsevles and copy them.As you would be able to buy...

9 Replies

14960 Views

Last post by rna_duelers
Thu Mar 12, 2009 1:05 am
compressor

Last post by POLAND_SPUD
Replies: 3
by roughboy » Tue Mar 10, 2009 11:18 am

First post

I've read in this forum that you can mod the compressor in your refrigerator to be able to pump your air cannon. What about a air conditioner...

Last post

now... I assume that you know that fridge compressors are good up to 500 - 600 psi... I know that we use them a little bit above their working...

3 Replies

1764 Views

Last post by POLAND_SPUD
Tue Mar 10, 2009 4:05 pm
Combustion Engine Questions...

Last post by THUNDERLORD
Replies: 8
by THUNDERLORD » Sat Feb 28, 2009 1:17 pm

First post

Hello all, Hope my bad sense of humor lately hasn't offended anyone too badly. :)

Anyway, I'm wondering what pressure small combustion engines can...

Last post

Thats a lot of work...
Too much IMO.

There are many other ways to achieve the same thing.

Yeah, I've always stated that a design is as good as the...

8 Replies

2288 Views

Last post by THUNDERLORD
Tue Mar 10, 2009 11:40 am
Explosive Ammo

Last post by gotbass7
Replies: 2
by gotbass7 » Sun Mar 08, 2009 8:12 pm

First post

nvm

Last post

oh. i saw it on here a long time ago, sorry. ill delete it

2 Replies

2700 Views

Last post by gotbass7
Sun Mar 08, 2009 8:16 pm
Help on materials

Last post by colty-bear
Replies: 5
by colty-bear » Thu Mar 05, 2009 5:10 pm

First post

I did some research(hint hint to MrCrowley) to find a specific materials list to spuddin's MG50. I downloaded the plans, I looked on google, and...

Last post

thank you :D i will do that

5 Replies

3007 Views

Last post by colty-bear
Thu Mar 05, 2009 9:11 pm
Need 4in pressure rated parts

Last post by trigun
Replies: 17
by c11man » Wed Feb 25, 2009 10:23 pm
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I am in the process of building a large piston cannon and i am in need of 4in tees and 90's. My local stores decided to be stupid and only sell 4in...

Last post

Sprinkler.com sells pressure rated tee's and all that up to 6 and above unlike mcmaster
17 Replies

6525 Views

Last post by trigun
Thu Feb 26, 2009 11:32 pm
9 cent ammo

Last post by jonnyboy
Replies: 14
by tape fist » Mon Jan 26, 2009 10:06 pm

First post

you probably already no this but if you have a 3/4 barrel you can make really cheap ammo out of 9 pennies and a piece black electrical tape that's...

Last post

I have no idea what your talking about Willis, ha.

Willis??....OK, this just shot about 50' over my head.... :? Some reference to Bruce Willis...?...

14 Replies

5633 Views

Last post by jonnyboy
Tue Feb 24, 2009 7:57 pm

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