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

1635207 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

101538 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

1087184 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

326560 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

333771 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

442383 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

5436043 Views

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

Topics

Australia - Parts Locations

Last post by SpoonZ
Replies: 39
by PCGUY » Sun Aug 27, 2006 2:30 am
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Having a hard time finding spudgun parts in Australia? Find a good seller of pressure rated pipe in Australia? Then post about it in this thread.

Last post

I think bunnings sell it like its liquid gold. I found some online for cheap as.
39 Replies

277759 Views

Last post by SpoonZ
Tue Jun 26, 2007 2:29 am
Arborist Weight

Last post by Balthazar
Replies: 8
by KA2AUB » Mon Apr 22, 2024 5:46 pm

First post

I have an air cannon with interchangeable barrels. so far, I have a 1 1/2 barrel and 1 barrel. I am trying to get paracord in a tree for my ham radio...

Last post

Use a small fishing weight attached to your paracord. A 1-2 oz weight can help you cast the line into the tree.

8 Replies

161819 Views

Last post by Balthazar
Tue Jun 16, 2026 5:43 am
Semi reusable threaded rod APFSDS

Last post by JimmyT
Replies: 6
by JimmyT » Fri Jul 04, 2025 2:57 pm

First post

So, I was thinking of ways to make APFSDS rounds for air cannons, and I realized that threaded rod is basically pre machined to have sabot interface...

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How's it going people. Someone asked me to design a projectile made to carry lines without tumbling. I've made a new sabot and fin setup designed to...

6 Replies

573739 Views

Last post by JimmyT
Mon Mar 23, 2026 8:56 pm
Interesting valve find... Check these out!

Last post by jimmy101
Replies: 4
by Jspellman12 » Fri Mar 14, 2025 1:48 am

First post

Hey! So I found this the other day....they look similar to my 2.5 asco solenoid valve that I've had forever... Minus the big ass boxes on top and...

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Is that a natural gas valve? If it is, the typical operating pressure is like 0.5 PSI. Which i think it says at the top of the label. Fluid power gas...

4 Replies

145588 Views

Last post by jimmy101
Tue Aug 19, 2025 2:59 pm
ammo hard solid with thermite tracer fuse and best feul

Last post by PCGUY
Replies: 4
by quinn whitsitt » Wed Feb 14, 2024 9:14 am

First post

guys if you want your spudgun to fire 2 in thracers i m warnnig you this is very dangrous be carfull doing this
get 1 and 1/2 in steel pipe with 1...

Last post

Topic locked - please refer to the rules.

3. Discussion of solid propellants, explosive devices or incendiary projectiles fired specifically...

4 Replies

116104 Views

Last post by PCGUY
Tue Feb 18, 2025 12:21 pm
Steel Ball Bearings

Last post by quinn whitsitt
Replies: 20
by crcowboyfan » Thu Mar 02, 2006 11:03 pm
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How would these steel balls be in a pneumatic cannon with a 1/2 barrel? Seems like that would be an awesome bullet.

Link to ebay

Last post

ball berings make great projectiles if you want to cause some destruction
20 Replies

200317 Views

Last post by quinn whitsitt
Thu Apr 18, 2024 12:06 pm
Some 3d printed ammo

Last post by Theonepbs
Replies: 12
by Theonepbs » Wed Sep 22, 2021 10:14 pm

First post

So been gone for awhile but I am back for a min here is some ammo I 3d printed on a whim

I’ll post more pics to this post when I locate the others...

Last post

the spring loaded fin design was from grab cad originally in the 12g size
the launcher is also a print and is called the nt-79 free on the odd see...

12 Replies

199082 Views

Last post by Theonepbs
Tue Mar 19, 2024 7:59 pm
Thermite = ammo? Hear me out.

Last post by quinn whitsitt
Replies: 10
by paaiyan » Tue Jan 15, 2008 9:22 am

First post

SO I just saw the topic on whoever is was that made the 19mm fin-stabilized, discarding sabot steel round. That made me think of an idea, for those...

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i made a solid steel armor peracing thermite incedary tracer for my spud once and thank you all for making this suggestion and you all should have a...

10 Replies

108809 Views

Last post by quinn whitsitt
Wed Feb 14, 2024 9:15 am
Shoulder Holster For Large Handgun

Last post by jrrdw
Replies: 1
by MichaelRNuno » Wed Dec 07, 2022 11:58 pm

First post

As shoulder holsters are not so popular now a days. I am not comfortable with hip holsters for large handgun. I want to use a shoulder rig. Anyone...

Last post

For a large handheld spud cannon. You should make your own...

1 Replies

87824 Views

Last post by jrrdw
Thu Dec 08, 2022 8:28 am
Can you make a pneumatic cannon shoot snowballs?

Last post by An0nim
Replies: 7
by An0nim » Fri Nov 04, 2022 3:00 am

First post

Winter is getting closer and closer and so does my fauvorite part of it - snowball fights. And I kinda want to spice these fights up. And I think...

Last post

Yeah I thought about this too but it would have much more friction and sharp corners would make it unstable in flight. It possibly could even...

7 Replies

120933 Views

Last post by An0nim
Tue Nov 08, 2022 11:33 am
LIGHT-BEARING HOLSTER

Last post by AdamPLo

by AdamPLo » Wed Oct 26, 2022 5:07 am

Can I use a LIGHT-BEARING HOLSTER WITHOUT THE LIGHT attached to my pistol?

0 Replies

124894 Views

Last post by AdamPLo
Wed Oct 26, 2022 5:07 am
Great video testing spud gun failure/safety (ThebackyardScientist)

Last post by hectmarr
Replies: 4
by Moonbogg » Mon Jul 25, 2022 9:36 pm

First post

Great video. He tested hydro testing to failure with PVC and it has enough POP to hurt someone for sure. Not sure if there was air in the line behind...

Last post

Watching a piece of 3 PVC hold until 1000psi+ makes me wonder what it would take to cause my aluminum cannon to burst. I'm starting to think 3.5X...

4 Replies

99309 Views

Last post by hectmarr
Fri Aug 05, 2022 7:27 am
Teflon lined barrel

Last post by jimmy101
Replies: 1
by Williams » Tue May 17, 2022 12:48 pm

First post

Hello,

I noticed that teflon and steel have a very low friction constant (0.05), and I was wondering if you could line a barrel with teflon (or make...

Last post

Lower barrel friction might actually lower cannon performance. For combustion cannons the friction (especially the static friction) contributes a lot...

1 Replies

85747 Views

Last post by jimmy101
Thu May 19, 2022 11:23 pm
Does Ice Bullets Actually Work?

Last post by Anatine Duo
Replies: 7
by LouisBMason » Fri Oct 29, 2021 1:38 am

First post

Anyone here know about Ice bullets? Does Ice Bullets Actually Work?

Last post

I've pondered this for decades. Daily highs are below freezing here for four months, so keeping an ice projectile solid is not a problem, though I...

7 Replies

155433 Views

Last post by Anatine Duo
Sun Dec 19, 2021 8:44 am
Source for Thin wall 1.5" pipe

Last post by iknowmy3tables
Replies: 5
by iknowmy3tables » Tue Oct 19, 2021 2:17 pm

First post

I was testing some ping pong balls with a 1.5 PVC drain tee and discovered it had the perfect geometry to facilitate shooting a single ping pong ball...

Last post

Thanks for the suggestions folks I ended up buying a section of metric PVC here

MECCANIXITY PVC Rigid Round Pipe 45.2mm ID 50mm OD 350mm Light Grey...

5 Replies

105583 Views

Last post by iknowmy3tables
Wed Nov 17, 2021 1:28 pm
Finding copper pipe parts

Last post by Anatine Duo
Replies: 4
by kunkmiester » Wed Sep 15, 2021 1:02 pm

First post

I was looking at copper for a couple of designs floating around in my head, but when looking at a decent sized gun(would want 1-2 barrel, and reducer...

Last post

IIRC some builders are sanding out the seam... I can't remember if I have done that but was going to when I get some time off, using a dowel and...

4 Replies

100423 Views

Last post by Anatine Duo
Thu Sep 23, 2021 5:24 am
barrel thoughts

Last post by Anatine Duo
Replies: 7
by Anatine Duo » Wed Aug 18, 2021 6:45 am

First post

I've been thinking (uh oh) again about barrels.

First, rifled chokes. I have a scrap .22 cal that maybe could be used as a rifled choke on the end...

Last post

Found some stuff for Canadian residents. Small for low pressure pneumatics but possibly useful.

7 Replies

123922 Views

Last post by Anatine Duo
Wed Sep 22, 2021 7:45 pm
What caliber ammo is most available In 2021?

Last post by Moonbogg
Replies: 3
by JamesE Carney » Tue Sep 14, 2021 12:20 am

First post

What calibre ammo is most available In 2021? As I noticed that Rifle ammo is most available ammo in 2021 & handgun ammo is hard to find. I may be...

Last post

Potato caliber, lime caliber, golf ball caliber, and soda can caliber are all readily available in my local area.

3 Replies

96212 Views

Last post by Moonbogg
Thu Sep 16, 2021 5:07 pm
Track pumps and Co2 inflators

Last post by jackssmirkingrevenge
Replies: 4
by golf45 » Sat Apr 10, 2021 6:14 pm

First post

Hi i am new to this great site. Been launching golf balls and other projectiles for years now by other means other than air and have got back into...

Last post

Welcome to the forum!

There is an alternative but a bit costly and that is using a Co2 inflator. What do they charge up to and how many charges of...

4 Replies

103366 Views

Last post by jackssmirkingrevenge
Sun May 02, 2021 7:18 am
Metal 3d printed projectile

Last post by wafen
Replies: 4
by UKO19 » Mon Aug 10, 2020 6:56 pm

First post

I have not tested this yet but im assuming with the right cannon it can do A LOT OF DAMAGE!

Last post

Guess you will need to add some fin to steady the shell,and a sabot,like APFSDS shot fot tank gun and it will have a good penetration ability.

4 Replies

107897 Views

Last post by wafen
Sat Jan 16, 2021 10:15 am
Look what I found!

Last post by PracticallySane
Replies: 2
by PracticallySane » Thu Dec 03, 2020 11:33 am

First post

Hey guys just came across an interesting product while looking for spark plugs for a hybrid.

These come with a standard pipe thread with multiple...

Last post

I would assume they are manufactured to the same standard as automotive spark plugs. Could always rig something up and do a hydrostatic test. But...

2 Replies

93981 Views

Last post by PracticallySane
Thu Dec 03, 2020 7:26 pm
Off Topic - is it illegal to draw a silencer in California?

Last post by jackssmirkingrevenge
Replies: 1
by Moonbogg » Wed Nov 25, 2020 9:42 pm

First post

A customer of mine asked me to design them a silencer for a 9mm handgun. We live in California, and possession of silencers is illegal in California...

Last post

Can you legally purchase this book in California? Or this one , or this ?

If so, I doubt you could be prosecuted for simply drawing something. I...

1 Replies

94686 Views

Last post by jackssmirkingrevenge
Wed Nov 25, 2020 11:51 pm
Brass as the foundation of a projectile?

Last post by jackssmirkingrevenge
Replies: 6
by D_Hall » Wed Jul 01, 2020 5:50 pm

First post

I'm sitting here looking at a piece of 38 special brass. It just happens to be on my desk (yes, really). And I'm thinking to myself, Self, this might...

Last post

How would hollow cylinder and sabot go.
Someone's thought about it.

Cookie Cutter tubular bullets exist, but they need to be fired from a rifled...

6 Replies

122452 Views

Last post by jackssmirkingrevenge
Sun Jul 19, 2020 6:16 am
Ideas for biodegradable cannon-balls

Last post by ToasT
Replies: 15
by Moonbogg » Tue Jun 11, 2019 5:48 pm
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I think it would be ideal to make a simple mold and create some biodegradable ammo. Liquid wood or something? Some sort of plaster or clay? Something...

Last post

I have used clay, it needs to be dried for several days, the larger, the longer it will require. If not dry, it tends to splatter and leave the...
15 Replies

237366 Views

Last post by ToasT
Fri Jun 19, 2020 3:36 am
Perfect Brass Barrel for 1/4" Slingshot Ammo

Last post by Xamllew
Replies: 2
by Xamllew » Fri Mar 13, 2020 12:46 am

First post

Just wanted to share a valuable resource with any others out there looking for a good tightbore barrel. McMaster Carr have these in stock

Just...

Last post

That's not too tight is it ? 0.249 ID

Nope. It's a very airtight fit, but a bearing can still drop through under gravity alone. Very close...

2 Replies

92615 Views

Last post by Xamllew
Fri Mar 13, 2020 5:09 pm

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