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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

1090909 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

69630 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

887295 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

224266 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...

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

244667 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

346366 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

5227776 Views

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

Topics

400 psi valve?

Last post by dongfang
Replies: 37
by AlbinoSpud » Tue Dec 18, 2007 6:47 pm
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Do you know any really fast valves that go up to 400 psi?
I can get ball valves, but they're too slow... :?

Last post

Hi,

You could use a large ball valve as a trigger, or another home built piston or DFTV valve, just smaller. Or, design the whole thing as a DTFV...
37 Replies

12446 Views

Last post by dongfang
Thu Dec 27, 2007 3:34 pm
Pesticide Sprayer Tank

Last post by cenzo188
Replies: 12
by daberno123 » Thu Dec 20, 2007 6:03 pm

First post

I found this tank in my basement and i was wondering what pressure it could stand. I used the attached hand pump to get it up to 45 psi before the...

Last post

Do you know who manufactured it, because if you do you can call and ask for the results of the destructive tests. Make up some excuse, don't say im...

12 Replies

5412 Views

Last post by cenzo188
Mon Dec 24, 2007 5:04 pm
Galvinised steel and brass

Last post by DYI
Replies: 13
by Carlman » Sun Dec 23, 2007 9:42 am

First post

hi all,

If i were to have 30cm of 20mm glavinised steel and a brass threaded end cap as well as a brass threaded reducer to fit a 1/4 ball valve and...

Last post

I've used the crappy welded pipe and chinese/korean fittings at 500 psi, and I'm still living. Using them at 3 times their rating like I do obviously...

13 Replies

3721 Views

Last post by DYI
Mon Dec 24, 2007 9:58 am
Sprinkler Solenoid Hole Plug

Last post by Ragnarok
Replies: 18
by Erlex » Sat Dec 22, 2007 6:46 pm
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I had made an awesome pneumatic gun that shot paint balls (paint ball sniper if you will) with a 1 Rainbird sprinkler valve, exactly like the one on...

Last post

They know me pretty well at my local DIY, but it's a lovely little family business, and so I don't get any problems there. And they have almost any...
18 Replies

7619 Views

Last post by Ragnarok
Sun Dec 23, 2007 11:17 am
gorilla glue

Last post by qbnbountyhunter
Replies: 25
by FordGtMan » Sun Dec 09, 2007 11:09 pm
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I wanted to glue something for a project i had tonight and when i went to go get the gorilla glue, i found that the whole thing hardened up like a...

Last post

Gorilla glue can be messy and foams up when dried, I prefer epoxy putty when their is a leak in my pnuematics. If the epoxy putty doesnt do the jod,...
25 Replies

9119 Views

Last post by qbnbountyhunter
Thu Dec 20, 2007 6:16 pm
Paintball Accuracy

Last post by alex bennett
Replies: 13
by ShowNoMercy » Sun Dec 09, 2007 11:56 pm

First post

I really don't want to hear the amazing story of hitting a 2 inch group at 50 yards, but I am looking to make a decent performing but more...

Last post

I like my Tippmann A-5 with the flatline, great distance, and I can turn the barrel and shoot a curve ball around objects :twisted:

13 Replies

11688 Views

Last post by alex bennett
Thu Dec 20, 2007 5:28 pm
odd CO2 leak

Last post by singularity
Replies: 5
by singularity » Thu Dec 20, 2007 12:09 am

First post

i have had my 5lb co2 setup for about a year now and have used it quite a bit. i have taken off the reg, changed out tanks, ect without incident...

Last post

never had a spacer before with my tank, and the o-ring seems to be almost impossible to remove, where could a buy a spacer/washer? do paintball...

5 Replies

2962 Views

Last post by singularity
Thu Dec 20, 2007 11:04 am
Hang Time Ballistics Live (beta)!

Last post by jimmy101
Replies: 27
by boilingleadbath » Thu Dec 13, 2007 8:33 pm
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Well, I finally got around to completing hang time ballistics Live , a javascript program that calculates Muzzle velocity/hang time/Cd/Apogee of a...

Last post

Boiling, ya, I think you (and DHall) are correct. You do need to calc the drag then split the drag into x and y components to calculate the affects...
27 Replies

9620 Views

Last post by jimmy101
Tue Dec 18, 2007 1:25 pm
Air rifle pellet length?

Last post by ALIHISGREAT
Replies: 12
by ALIHISGREAT » Tue Dec 18, 2007 5:18 am

First post

i need to know what length .22 air rifle pelets are specifically crossmen accupells (because they are nice and light) which i wil probably use in my...

Last post

what size ballon... a hot air ballon? :D i could hit that with ease from 120 yards 8)

12 Replies

3131 Views

Last post by ALIHISGREAT
Tue Dec 18, 2007 8:47 am
5 gallon water bottle chamber

Last post by ALIHISGREAT
Replies: 19
by Eddbot » Thu Dec 13, 2007 2:01 am
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ok, i was in french class the other day, and there's a water cooler with one of those 5 gallon tanks that you put in upside down, when i was getting...

Last post

Okay I just went on to burnt latke and used there rat calc thing and discovered That the barrel would have to be ~30ft long if you used 2in pipe to...
19 Replies

8074 Views

Last post by ALIHISGREAT
Sat Dec 15, 2007 1:40 pm
Help with golf and tennis ball barrels.

Last post by BigGrib
Replies: 22
by cameronfield » Wed Dec 12, 2007 9:41 pm
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How can I do this? I read somewhere that 1.5 PVC works, but...it doesn't. The ball is too big (for golfballs).

Is 2.5 PVC the exact right size for...

Last post

Lol no I dont want that to happen. How do I keep it from coming off? Prime/cement the ENTIRE thing??? Damnit I might just order it from bcarms......
22 Replies

7569 Views

Last post by BigGrib
Fri Dec 14, 2007 8:33 pm
High pressure hydrogen vessel

Last post by Novacastrian
Replies: 15
by DYI » Thu Dec 13, 2007 6:44 pm
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I have a choice of either hydrogen or helium for the airsoft gun I'm making in the winter. Both would have an operating pressure of around 2kpsi....

Last post

Ah ok, thanks for clearing that up :oops:
Slips into obscurity
15 Replies

9017 Views

Last post by Novacastrian
Fri Dec 14, 2007 6:46 pm
Spring-Loaded Magazine

Last post by flamerz14
Replies: 5
by Zippster » Tue Dec 11, 2007 11:04 pm

First post

I don't have a bolt-action, but was theorizing on it: instead of your average toploading, keep-it-upright mag, what about one that was spring loaded?...

Last post

anyway what's the thing between the to valve and o-ring? looks like a coupler?

5 Replies

4152 Views

Last post by flamerz14
Thu Dec 13, 2007 8:08 am
Steel Pipe Thickness

Last post by clide
Replies: 7
by pat123 » Tue Dec 11, 2007 5:27 pm

First post

I have a quick question, sch is a thickness rating right? so sch 40 steel would be the same thickness as sch 40 pvc? I am thinking about making a...

Last post

The schedule defines a minimum wall thickness and the outside diameter. It might also define a maximum wall thickness, but I'm not sure about that....

7 Replies

3194 Views

Last post by clide
Wed Dec 12, 2007 12:01 pm
poly pipe pressure rating

Last post by rna_duelers
Replies: 2
by experament-u2 » Tue Dec 11, 2007 8:07 am

First post

ok chaps
dose anyone know if a piece of 1 ploy pipe (riser) can hold a maximum pressure of 200 psi

heres what im talking about if people dont...

Last post

16 bar my friend,but it also is available upto pressure rating of 22 bar,but the run of the mill stuff you can easily get is 16 bar.

I can double...

2 Replies

1906 Views

Last post by rna_duelers
Tue Dec 11, 2007 4:18 pm
Bolt action combustion paintball sniper.

Last post by wangpushups
Replies: 14
by wangpushups » Tue Dec 04, 2007 5:41 pm

First post

I seen the plans for PCGUY's bolt action but i read the thread and i guess it doesnt seal too well. If i have to, i'll use o-rings to seal it up but...

Last post

I might do that but i'll wait until spring to make another one.

14 Replies

10816 Views

Last post by wangpushups
Mon Dec 10, 2007 3:54 pm
Where to find Shrader Caps?

Last post by Maniac
Replies: 22
by VH_man » Tue Dec 04, 2007 7:36 pm
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Well, i was reading a recent topic involving a 10mm barrel, and the poster of the cannon used those little black plastic shrader valve caps as dart...

Last post

whoa look here a 1000 pack for 14$ i might buy some
22 Replies

7802 Views

Last post by Maniac
Sat Dec 08, 2007 2:10 pm
Whats better: opened "Tail" Vs. Closed "Tail&

Last post by jrrdw
Replies: 5
by Mr. Beaver » Fri Dec 07, 2007 10:02 am

First post

Hi, I have a Question, no, more of a thought, what is better an opened tail projectile Vs. closed tail projectile after using them both with my crapy...

Last post

Did the closed tail projectile tumble during flight?

+- but i asked that because i don't really know to say whats better with my crappy gun i need...

5 Replies

2555 Views

Last post by jrrdw
Sat Dec 08, 2007 10:23 am
What size copper pipe fits marbles??

Last post by cwazy1
Replies: 6
by cwazy1 » Fri Dec 07, 2007 12:25 am

First post

Im making a marble cannon and i need to know which type of copper pipe fits marbles?

like give me a diameter and also a type of copper. inches...

Last post

ahh, okay gottcha,

apparently the marbles i have are a lil under 3/4 so i found an alum barrel that fits mine perfectly =) yay

6 Replies

2826 Views

Last post by cwazy1
Fri Dec 07, 2007 7:49 pm
Multi Spark igniter

Last post by octane89
Replies: 4
by octane89 » Thu Dec 06, 2007 12:38 am

First post

Found this online and thought some combustion builders would be interested.

Last post

Yea just a hole is needed, and boom-you have a pistol grip-style ignition.

4 Replies

1815 Views

Last post by octane89
Fri Dec 07, 2007 9:32 am
Stainless Steel chamber rating's

Last post by Lftndbt
Replies: 6
by Lftndbt » Thu Dec 06, 2007 8:06 am

First post

G'day
I have done the obvious searches, with no luck...

So I was wondering....
Does anyone know if stainless steel tubing, has a minimum standard...

Last post

If you happen to know the grade/tensile strength of the tubing, we can give you a fairly accurate calculation of its working/burst pressure.

Using...

6 Replies

2901 Views

Last post by Lftndbt
Fri Dec 07, 2007 3:02 am
Why is it so hard to find where to buy stuff >>>>

Last post by Mr. Beaver
Replies: 17
by Mr. Beaver » Wed Dec 05, 2007 5:26 am
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Hi everyone i live in israel and i want to build my first gun, pneumatic, i got all the plans i wrote everything i need to buy i just don't seem to...

Last post

K 10x everyone i just found someone in this forum from israel ...
thanks to him i now know where i can get some pressure rated pvc :) they will be...
17 Replies

8292 Views

Last post by Mr. Beaver
Thu Dec 06, 2007 5:17 am
Malleable iron fittings

Last post by octane89
Replies: 8
by ALIHISGREAT » Wed Dec 05, 2007 4:57 pm

First post

i found these iron fittings but it doesn't say on the web page what they are rated to, do you guys think they would be suitale for a high pressure...

Last post

As long as they're steel yes. But the weld will be poor because they are forged, iron, and really not made to be welded. If they were welded, the TIG...

8 Replies

2375 Views

Last post by octane89
Thu Dec 06, 2007 12:14 am
hydrolic extreme presure pumps

Last post by iknowmy3tables
Replies: 8
by iknowmy3tables » Wed Dec 05, 2007 10:48 am

First post

hey I was looking around on mc masters, there are a lot of pumps that can produce extreme presures, but I think a lot of them are for hydrolics, and...

Last post

How about buying a used one from a fire department or scuba rental place?
no luck, thats also pretty darn big I think. hmm that gives me an idea...

8 Replies

3814 Views

Last post by iknowmy3tables
Wed Dec 05, 2007 5:28 pm
getting ammo out of mold help please

Last post by Ragnarok
Replies: 8
by JDP12 » Tue Dec 04, 2007 8:21 am

First post

Hey all, well i was making some hot glue ammunition similar to nova's pimpin ammo the other day, using a piece of copper from my barrel as a mold. I...

Last post

If you use copper, the edge will be slightly curved, thats whats stopped my slugs coming out.
Only if it was cut with a pipe cutter. I tend to just...

8 Replies

2979 Views

Last post by Ragnarok
Wed Dec 05, 2007 1:50 pm

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