Ammo & Materials

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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

630118 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

49521 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

730395 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

140541 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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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...

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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

171808 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

259983 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

5097998 Views

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

Topics

Frozen Spuds & Such

Last post by Sonicboom101
Replies: 16
by Sonicboom101 » Fri Mar 04, 2011 1:05 pm
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Hello. In the next day me and my buddies are going to shoot our spud guns. However I'm the only one that has an Advanced Combustion Cannon. I really...

Last post

Sounds good. Thanks!
16 Replies

6419 Views

Last post by Sonicboom101
Sun Mar 06, 2011 5:03 pm
The Limits of Epoxy

Last post by jackssmirkingrevenge
Replies: 15
by Jimmy K » Thu Mar 03, 2011 9:53 pm
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I am getting ready to epoxy some fittings into my valves for my upcoming cannon and started thinking: what are the limits of epoxy? My cannon's max...

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Any ideas how high I can take that chamber partialy sealed with epoxy?

Threads are 3/4 NPT, max pressure I intend to use is 40-50 bar.

I often use...
15 Replies

4407 Views

Last post by jackssmirkingrevenge
Sat Mar 05, 2011 11:14 pm
Help, materials needed!

Last post by Crna Legija
Replies: 2
by Joshua DeWeese » Mon Feb 28, 2011 4:47 pm

First post

Hello everybody,
I need some help, I've been making spud guns for years now but I haven't changed from the classic hair-spray lighter method, I...

Last post

i think something like this would be the best thing you can make.

2 Replies

1179 Views

Last post by Crna Legija
Mon Feb 28, 2011 10:19 pm
is fiberglass resin the same as epoxy?

Last post by turner
Replies: 16
by turner » Sun Feb 27, 2011 2:02 am
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so Im making an aluminum coax and i don't want to buy marine epoxy like everybody uses, what are your thoughts on elmer's fiberglass resin?

Last post

well today i epoxied in the presta vavle by heating it up, and it worked great
16 Replies

6835 Views

Last post by turner
Mon Feb 28, 2011 9:29 pm
Epoxy bulk buy

Last post by mark.f
Replies: 6
by lozz08 » Thu Feb 24, 2011 3:29 am

First post

Buying syringes of araldite is getting quite expensive. I need an epoxy that I can use for structural components and as an adhesive. I actually...

Last post

I've used TAP products in vinyl sign making so I just did a quick search to see if they had epoxies/polyester resins/what nots. Certainly interesting...

6 Replies

3063 Views

Last post by mark.f
Fri Feb 25, 2011 6:25 am
Best PVC fittings outlet.

Last post by jrrdw
Replies: 3
by AnotherSnappedLine » Sat Feb 12, 2011 11:03 pm

First post

After surfing the web, I finally found a favorite! This is fast, reliable and easy to use...If you can't find a part at the store, go here next.

Last post

Add these outlets/stores the the above mentioned page and I'll add them to the list there, I all ready added the 1st link to the page.

3 Replies

1776 Views

Last post by jrrdw
Sun Feb 13, 2011 4:51 pm
Servo Qs

Last post by Technician1002
Replies: 7
by Lockednloaded » Fri Feb 11, 2011 12:15 am

First post

I'm looking into a pan/tilt system to be controlled through USB, so I looked around, and found a few parts that I think will get the job done.

Pan...

Last post

Before abandoning the one interface due to the programming, take the time to examine the manual and see of the software is going to be too...

7 Replies

2290 Views

Last post by Technician1002
Fri Feb 11, 2011 12:48 pm
Problème full auto !

Last post by jackssmirkingrevenge
Replies: 24
by smirpab » Tue Jan 25, 2011 2:01 pm
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Hello to you!

First of all, saddened for my English, I am French ;)

I wanted to have some piece of information on pac full house automobile, I am...

Last post

The pop-off wants to drain the pilot area while the blowgun tries to fill it...

That's true, but on the other hand, the feed from the blowgun makes...
24 Replies

6350 Views

Last post by jackssmirkingrevenge
Wed Feb 02, 2011 1:48 am
Possible 2.5" Ammo

Last post by Technician1002
Replies: 13
by Lockednloaded » Thu Mar 11, 2010 11:20 pm

First post

The most common ammo for 2.5 barrels are usually tennis balls. Tennis ball are fun, easy to get, and cheap, but damage can sometimes be lacking :( ....

Last post

In testing with my large cannon, water filled tennis balls go almost twice as far as normal tennis balls.

13 Replies

6854 Views

Last post by Technician1002
Sun Jan 30, 2011 10:26 am
Galvanized steel maximum pressure?

Last post by daniele tn
Replies: 8
by daniele tn » Sat Jan 22, 2011 6:00 pm

First post

Hi guys,
I was thinking about making another medium piston gun, all copper and galvanized steel, does anybody know if it is safe to use 1 galvanized...

Last post

Thanks for the help everyone.
Yes, I could go for a 2 stage pump, I have already build one that cold take my old 16 mm piston gun to 18/20 bar but it...

8 Replies

3943 Views

Last post by daniele tn
Tue Jan 25, 2011 4:37 pm
Has anyone tried this?

Last post by motorfixer1
Replies: 5
by JABN » Mon Jan 24, 2011 2:55 pm

First post

I stuffed through the barrel a plastic bag then threw down a small rock. This works really well since the rock goes really fast and its really cheap...

Last post

Crushed up spark plug porcelain also works quite well, even out of a wrist rocket. Something about its effects on tempered auto glass, not to incite...

5 Replies

2223 Views

Last post by motorfixer1
Mon Jan 24, 2011 7:10 pm
Most Efficient Projectile Shape

Last post by saefroch
Replies: 101
by Floyd » Tue Nov 11, 2008 8:21 pm
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Sooo, its that time of year where all the schools start a science fair and my question is......

What is the most efficient shape for a projectile...

Last post

Supersonic flights result in areas in vacuum. I assume you're talking about the rarefaction that travels behind the buildup of sound waves that...
101 Replies

34208 Views

Last post by saefroch
Sat Jan 22, 2011 6:43 pm
Casted plastic ammunition?

Last post by Mr.michael.2468
Replies: 18
by FighterAce » Fri Jan 21, 2011 4:27 pm
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I'd like to try and cast plastic ammunition but I don't know which plastic can melt at a low enough temperature and can be poured into molds. Any...

Last post

even better idea take yellow electrical caps use sch80 1/2 pipe and epoxy 3/8in ball bearings to the tips punches through an inch of solid board at...
18 Replies

5112 Views

Last post by Mr.michael.2468
Sat Jan 22, 2011 5:34 pm
AlMgSi 5.0 pipe for a bolt action mechanism?

Last post by FighterAce
Replies: 16
by FighterAce » Wed Jan 12, 2011 6:07 am
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I've been searching for the best outer pipe for my bolt action breech loading mechanism. I found an Aluminum pipe 25x2.5 -> 20mm ID witch is perfect...

Last post

Going a little bit off topic.... still related to that alloy tho :D

I was thinking about that 5x safety factor for 40 bar....I realized that a...
16 Replies

7002 Views

Last post by FighterAce
Sat Jan 22, 2011 3:13 pm
Working designs for parachute ammo (with a difference...)

Last post by jackssmirkingrevenge
Replies: 78
by Carlman » Sun Dec 02, 2007 11:19 am
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hi all,

I own a RC helicopter and for it i purchased a mini wireless camera that transmits up 2 100m easy. The views from 100m up got me...

Last post

Done without a parachute, strapped to an arrow - surely one could easily do the same for a spudgun projectile?

You can get a fob camera for less...
78 Replies

21126 Views

Last post by jackssmirkingrevenge
Sat Jan 22, 2011 3:00 am
Aluminum water bottle air tank

Last post by ilovefire
Replies: 7
by hyperspaz » Thu Jan 20, 2011 9:26 pm

First post

I want to use an aluminum water bottle as an air chamber, but i dont know what kind of pressures one can handle. They're pretty cheap and look fairly...

Last post

I'll pump it up from a distance the first few times before getting near it.

its not the first few times you should be worried about, repeated...

7 Replies

3877 Views

Last post by ilovefire
Fri Jan 21, 2011 1:47 am
Aluminio-silicate scraps

Last post by saefroch
Replies: 9
by saefroch » Thu Jan 13, 2011 9:07 pm

First post

I found a little baggie of some ceramic scraps from a while ago, and if I recall correctly, they're high-temperature feed-throughs. In any case, I...

Last post

I'm about 3d from the end so I think I'll be okay on tear out stress.

Results from first trial: No break under 22.87 pounds (edited because I can't...

9 Replies

3082 Views

Last post by saefroch
Sun Jan 16, 2011 11:37 am
4" Cleanout Adapter and Plug

Last post by Fnord
Replies: 1
by nathanhd123 » Sat Jan 15, 2011 12:41 pm

First post

I live in the UK and I really need help finding a 4 cleanout adapter and plug. I know you can buy them in the US but the shipping is about $90. If...

Last post

Walk around town until you find a drain pipe cleanout that hasn't been glued :)

Also ask your local hardware stores if they might have one stashed...

1 Replies

1326 Views

Last post by Fnord
Sat Jan 15, 2011 1:49 pm
Bonding plastic to metal

Last post by nature-boy
Replies: 5
by Vincenzo » Mon Jan 10, 2011 6:20 pm

First post

Since epoxy is good on plastics, and JB Weld is good on metals, would mixing the two bond plastic to metal? I was thinking of a sort of marble...

Last post

What plastic do you want to bond to metal?
Because there a several (thermo-) plastics, that can't (or are difficult to) be bonded, even with epoxy :?...

5 Replies

2935 Views

Last post by nature-boy
Tue Jan 11, 2011 4:48 am
Alternative Ammo: Cupcakes

Last post by chinnerz
Replies: 1
by Mountain Storm » Sat Jan 01, 2011 11:16 am

First post

Yep. I am always on the look out for anything that fits the bore of my 2 co-axial cannon. Last night when I ran out of taters I spied a tray of stale...

Last post

LOOOOL!
That is all.

1 Replies

1855 Views

Last post by chinnerz
Sun Jan 02, 2011 3:24 am
Cold-Fire Tracer Rounds (DIY)

Last post by al-xg
Replies: 2
by Mountain Storm » Sat Jan 01, 2011 11:37 am

First post

Last night as part of the celebratory events I was launching some spuds. I found an ancient Glowstick in a drawer and decided to try out an idea that...

Last post

I tried the same thing out of my 14mm airgun but using some high powered LEDs. It works really well, a bit of a starwars laser effect at the start...

2 Replies

4239 Views

Last post by al-xg
Sat Jan 01, 2011 4:47 pm
pinhole leak where heater element comes thru assembly

Last post by omniscient
Replies: 1
by epipeinfo » Fri Dec 31, 2010 2:48 am

First post

10 yr old Regal hot tub. Heater element (110V) appears to be is glued in stainless assembly tube. And right by one of the prongs that come thru the...

Last post

J-B Weld Company - WATER WELD

1 Replies

1118 Views

Last post by omniscient
Fri Dec 31, 2010 5:14 am
Expanding Air Line

Last post by psycix
Replies: 6
by DYI » Sun Dec 26, 2010 11:09 am

First post

A recent project of mine includes a 3/8 ID, 300psi rated air hose from Lowes, which I believe is the Task Force brand PVC hose (although I've been...

Last post

@metalmeltr

I also use grease gun hose for my fridgy. It can leak air into a bubble under the surrounding skin.

BTB did that with the same hose,...

6 Replies

3917 Views

Last post by psycix
Thu Dec 30, 2010 9:23 am
Bbmg ammo in australia

Last post by jhalek90
Replies: 14
by cfb_rolley » Mon Dec 27, 2010 1:41 am

First post

Anyone know where I can get some sort ammo for a bbmg in Australia or even something I could use as ammo shipped to Australia (that will pass through...

Last post

these look fun.

(topic by more_eggs)

14 Replies

4371 Views

Last post by jhalek90
Tue Dec 28, 2010 11:54 am
Great Stuff under pressure?

Last post by Fnord
Replies: 7
by Vincenzo » Mon Dec 20, 2010 12:03 pm

First post

I want to insert a piece of pipe in a fitting in the pilot of my 2 piston valve, and fill around it with Great Stuff. I am just not sure if it will...

Last post

If in doubt, bondo.

It's cheap and fairly tough.

7 Replies

2734 Views

Last post by Fnord
Mon Dec 20, 2010 5:40 pm

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