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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

944976 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

62514 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

825297 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

196137 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

221863 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

315857 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

5182886 Views

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

Topics

Combined floating o-ring and one-way valve

Last post by Gun Freak
Replies: 3
by GalFisk » Mon Jun 21, 2010 2:21 pm

First post

I came up with this when renovating my long-ignored airsoft semi. By cutting grooves in one of the edges that seal against a floating o-ring...

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I also saw the same thing in my hand pump for balloons and balls. One side has two grooves cut in it to allow air to go back in front of the seal.

3 Replies

2885 Views

Last post by Gun Freak
Mon Jun 21, 2010 9:37 pm
Copper DWV fittings

Last post by Technician1002
Replies: 11
by theBOOM » Sat Jun 19, 2010 9:50 pm

First post

I seem to have bought a copper dwv female adapter (1/2 ) by accident and now I'm wondering how unsafe it is to use it at high pressures, it has about...

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The copper they use for Air Conditioning is a bit pricey, but it is never low pressure. They mark it by the true OD instead of the nominal ID. For...

11 Replies

5860 Views

Last post by Technician1002
Sun Jun 20, 2010 7:57 pm
3/4 thread to 1/2 coupling adapter

Last post by sgort87
Replies: 5
by spikerbond » Tue Jun 08, 2010 7:53 pm

First post

is there an adapter with a 3/4 thread and a 1/2 adapter? if so where can i get one?

this is what i want

Last post

If you have a Menards around, I know they have em.

5 Replies

2549 Views

Last post by sgort87
Tue Jun 15, 2010 8:14 pm
Hole Saw Ideas Needed?

Last post by boyntonstu
Replies: 10
by boyntonstu » Fri Jun 11, 2010 9:50 pm

First post

I have a short piece of 3/4 Type L copper barrel tubing that I adapted to chuck in my drill press for cutting corks to barrel size.

Can you suggest...

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Whatever you decide to do, make sure you have some access at both ends of the copper. Otherwise, you may find it difficult to remove the cork.

I...

10 Replies

3952 Views

Last post by boyntonstu
Mon Jun 14, 2010 8:10 pm
Over Under Size Questions

Last post by sgort87
Replies: 8
by Taelryn » Fri Jul 24, 2009 12:55 am

First post

Hello all,

I'm new to posting, but I've been lurking in the forums for years. I've wanted to make a propane fueled tennis ball cannon for years now....

Last post

Pardon me for kicking up an old thread, but I just wanted to quickly address something about the Blue Flame support issue.

I decided against a...

8 Replies

3194 Views

Last post by sgort87
Sun Jun 13, 2010 5:54 pm
Golf Balls, not quite as hard as once thought

Last post by POLAND_SPUD
Replies: 14
by Lockednloaded » Mon Jun 07, 2010 6:13 pm

First post

This is a normal golf ball hitting a steel plate, Amazing how much these things warp. its an insanely high speed, high quality camera, but still...

Last post

it reminds me of the jelly scope

:wink:

14 Replies

3740 Views

Last post by POLAND_SPUD
Tue Jun 08, 2010 2:26 pm
leak and glue problem

Last post by fir3dp
Replies: 13
by fir3dp » Sat Jun 05, 2010 12:03 am

First post

hello!

my first post!

this is my second gun and i have bought everything. using co2!
i have a problem with my piston. its alu and i have having...

Last post

ok thanks for your replies.thinking of making a bigger barrel so i can use washers for the pistons. prob save the small one for some other time

13 Replies

4037 Views

Last post by fir3dp
Tue Jun 08, 2010 11:29 am
Cheap and dirty cardboard sabot nail dart

Last post by boyntonstu
Replies: 2
by boyntonstu » Mon Jun 07, 2010 6:24 pm

First post

Cheap and dirty cardboard sabot nail dart.

Cut some cardboard disks with a piece of sharpened barrel tubing, hot glue them to the head of the nail,...

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I've used the lid off a pop bottle. It is stiffer and less mass. I'm working on softening them to custom mold them to my barrel sizes.

A 12 Gauge...

2 Replies

2317 Views

Last post by boyntonstu
Mon Jun 07, 2010 7:53 pm
Advanced PVC Rocket idea

Last post by Ranger

by Ranger » Sat Jun 05, 2010 6:15 pm

I was looking at a PVC rocket (not a real rocket, just a mock up of one to be fired from a replica WWII bazooka) on this forum (i cant find the...

0 Replies

2626 Views

Last post by Ranger
Sat Jun 05, 2010 6:15 pm
Epoxy casting/use

Last post by jackssmirkingrevenge
Replies: 21
by Slauma » Mon May 31, 2010 12:35 pm
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I've been working on a new golfball gun and in an effort to ergonomize I've been trying to figure out the best way to reduce (hopefully eliminate)...

Last post

The issue is that epoxy on its own has relatively little tensile strength, and for say a 1 inch fittings at 150 psi, that's over 115 lbs of force...
21 Replies

8774 Views

Last post by jackssmirkingrevenge
Sat Jun 05, 2010 10:40 am
strength of 2219 aluminum arrow

Last post by theBOOM
Replies: 4
by spikerbond » Thu Jun 03, 2010 7:43 pm

First post

i have a couple eagle easton 2219 aluminum arrow shafts. anyone know the strength of these?

Last post

Oh sorry I was talking about using it as a barrel piece. I actually cut off half of the tube arrow and all that was left was a tube and the broadhead...

4 Replies

2623 Views

Last post by theBOOM
Fri Jun 04, 2010 12:44 am
Modding a "jar-top" sprinkler valve

Last post by Gun Freak
Replies: 12
by Gun Freak » Mon May 31, 2010 7:48 pm

First post

My buddy came over today for me to help him make his first cannon. It is a dual chamber, each with ball valves, for two shots. Valve is a 1 orbit...

Last post

I have some white lithium grease, how about that? The problem I am having is that it has to be filled from the pilot side in order to equilize fast...

12 Replies

3003 Views

Last post by Gun Freak
Thu Jun 03, 2010 9:05 pm
A very wicked nail dart and a perfect wadcutter shot

Last post by boyntonstu

by boyntonstu » Thu Jun 03, 2010 8:55 pm

A few seconds on the bench grinder turns an ordinary nail head into a sharp chisel.

Note that the impression in the plywood show that the flat head...

0 Replies

2857 Views

Last post by boyntonstu
Thu Jun 03, 2010 8:55 pm
1/2 inch pvc barrel ammo

Last post by Technician1002
Replies: 4
by blackhawk13 » Wed Jun 02, 2010 9:11 am

First post

I recently found some mini gum balls that were a few years old so I tried shooting them from my 1/2 inch pvc pneumatic gun. They were more accurate...

Last post

:D I did. The supprise was when gumballs were able to punch holes in a sheet of plywood. Jawbreakers work well too.

4 Replies

2214 Views

Last post by Technician1002
Wed Jun 02, 2010 7:27 pm
This is a very destructive dart.

Last post by boyntonstu
Replies: 4
by boyntonstu » Tue Jun 01, 2010 12:53 pm

First post

This is a very destructive dart.

It flies straight and true.

The 10d nail head first penetrates 2 layers of 3/4 plywood and the 3/4 shotshell face...

Last post

Tail shape in flight.

Captured from AVI using Virtualdub.

Notice how cylindrical the T shirt tail appears.

P.S. The head of my 10d nails measures...

4 Replies

1858 Views

Last post by boyntonstu
Wed Jun 02, 2010 8:12 am
Modding a fire extinguisher

Last post by Gun Freak
Replies: 37
by Gun Freak » Fri May 21, 2010 7:51 pm
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Are there any tutorials for modding a fire extinghuisher into an airtank? I have four of them laying around for no reason, and I need a backpack...

Last post

I did something like this years ago:

I saw that thread, it makes no sense.
Too hard to understand the pictures

-_-, I'm pretty sure it is close...
37 Replies

10745 Views

Last post by Gun Freak
Tue Jun 01, 2010 7:58 pm
Tumbling Dart

Last post by jimmy101
Replies: 7
by boyntonstu » Wed May 26, 2010 12:01 pm

First post

150 psi 315 fps looks great exiting the barrel, yet it tumbled within 25 feet.

Question: What is the highest speed homemade nail dart that you know...

Last post

One thing to consider; is it the dart or the gun that is making it tumble?

A poorly crowned muzzle will tend to give a big sideways kick to the ammo...

7 Replies

3397 Views

Last post by jimmy101
Sun May 30, 2010 3:38 pm
Hour Glass Shapped Dart

Last post by deathbyDWV
Replies: 7
by boyntonstu » Sun May 23, 2010 3:00 pm

First post

After shot.

To make: Cut 6 1-1/2 slits in the shotshell hull and tie a waist with dental floss.

220 gr 717 fps seemed to fly straight....

Last post

Ok I understand now... Pretty much just searching for the perfect dart. Sounds good. :)

7 Replies

2480 Views

Last post by deathbyDWV
Sun May 23, 2010 9:18 pm
O.D. and I.D. copper fittings/pipe

Last post by Lockednloaded

by Lockednloaded » Wed May 19, 2010 6:05 pm

sorry if there is already a thread on this, but does anyone know a good site to find the O.D of a 1/2 coupler, and I.D. of copper pipe? i found...

0 Replies

2396 Views

Last post by Lockednloaded
Wed May 19, 2010 6:05 pm
1/4" Inner Diameter Barrel, and steel shot 1/4"

Last post by Tantum
Replies: 11
by spudkpi » Thu Apr 08, 2010 2:11 pm

First post

Anyone know where to find either something that is 1/1 ID, or where to buy steel ball bearings? I checked at Dick's in the sporting section maybe for...

Last post

My apologies to revive a relatively old topic, but I feel this is a decent enough reason...

I'm searching for something with a ~.25 ID for 1/4 steel...

11 Replies

4090 Views

Last post by Tantum
Tue May 18, 2010 7:12 pm
Terrible ballistic coefficient dart

Last post by boyntonstu
Replies: 4
by boyntonstu » Mon May 17, 2010 6:38 pm

First post

At 880 fps this 176 grain dart should have gone much further into the target.

The T shirt acted like a drag racing parachute.

The positive is that...

Last post

It would be an interesting experiment to see how far you can shorten the t shirt material until stability is lost.

You have the right idea.

Check...

4 Replies

2217 Views

Last post by boyntonstu
Tue May 18, 2010 7:27 am
Tried epoxy and JB Weld...

Last post by clemsonguy1125
Replies: 15
by Gun Freak » Sun May 16, 2010 11:30 am
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Well I am trying to stick a stop nut onto my bolt ation golf ball loader. I tried to epoxy it twice, and I JB Welded it overnight and it still broke...

Last post

I'm not getting this so I'll just wait for a video, could you draw a diagram
15 Replies

4843 Views

Last post by clemsonguy1125
Sun May 16, 2010 8:03 pm
Cheap 1/2 inch QEVs

Last post by clemsonguy1125

by clemsonguy1125 » Sun May 16, 2010 3:20 pm

Heres a ebay link to 6 1/2 inch QEVs, Gun Freak found these and showed them to me, credit to him.

0 Replies

2241 Views

Last post by clemsonguy1125
Sun May 16, 2010 3:20 pm
Acetone paint

Last post by clemsonguy1125
Replies: 19
by clemsonguy1125 » Sat May 15, 2010 8:15 pm
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I just painted my old gb gun with rustoleum because it sticks well to PVC but then relized it has acetone in it, will it weaken the gun, should I...

Last post

ok thanks, is not a thick thick layer of paint but its not light, seeing as i operate at under 80 psi I think it will be fine
Edit- heres a pic or...
19 Replies

4429 Views

Last post by clemsonguy1125
Sun May 16, 2010 12:27 pm
New T Shirt Nail Dart

Last post by boyntonstu
Replies: 4
by boyntonstu » Sun May 16, 2010 11:17 am

First post

The green part is the rear 3/4 of a 12 gauge shotshell hull.

The fabric is a a 3x3 cut from a T shirt.

Hot glue holds the 3 10d nail to the hull on...

Last post

That design looks very promising to me. What distance did you shoot it from? I've made the experience that these kind of featherdarts slow down very...

4 Replies

1690 Views

Last post by boyntonstu
Sun May 16, 2010 12:04 pm

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