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| bobgengeskahn |
 Posted: 07/25/2010 23:06 PM Post subject: PVC question in reguard to an airsoft mine design |
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Corporal
Joined: 23 Jul 2009
Posts: 73
259.19 Spud Bux
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hello everyone, its been a while since I have posted but I have been poking in from time to time, especially since i started this mine project. so here is the question: is there a special way to resize the PVC to fit inside of eachother close enough to be used as a piston? I know that people have done it on a regular basis here, but when I try to fit parts inside of eachother at my hardware store they are just fractions of an inch too big or way too small. typically i am looking at sch 40 parts, could this be the problem?
The valve within the mine is currently based off of technicians t-shirt cannon with a sliding QDV. however i am debating going to some kind of a sealing face to avoid having to build such a small piston. (the inner tube is 1/2" sch40 pvc) |
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| SP00K |
| Posted: 07/26/2010 6:28 AM Post subject: |
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2nd Lieutenant
Joined: 03 Dec 2008
Posts: 211
214.29 Spud Bux
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With somethine that small it should be really easy to just cast one yourself out of epoxy. Although I have no experience there  |
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| bobgengeskahn |
| Posted: 07/26/2010 9:40 AM Post subject: |
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Corporal
Joined: 23 Jul 2009
Posts: 73
259.19 Spud Bux
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| do you need to fit o-rings to epoxy pistons? ive never made one before... |
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| clemsonguy1125 |
| Posted: 07/26/2010 9:54 AM Post subject: |
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Major General
Joined: 21 Jul 2009
Posts: 1486
1475.73 Spud Bux
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| With a QDV piston yes, its possible to have a perfect seal with out but difficult, for a barrel sealing valve no. |
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| bobgengeskahn |
| Posted: 07/26/2010 13:01 PM Post subject: |
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Corporal
Joined: 23 Jul 2009
Posts: 73
259.19 Spud Bux
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| Ive been debating changing the design to a barrel sealing piston... ill try to post a paint drawing tonight when i get home... |
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| clemsonguy1125 |
| Posted: 07/26/2010 14:12 PM Post subject: |
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Major General
Joined: 21 Jul 2009
Posts: 1486
1475.73 Spud Bux
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| If its for a mine, you could probably use a sprinkler valve, but a barrel sealer will be easier to make work than a QDV |
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| bobgengeskahn |
| Posted: 07/26/2010 16:34 PM Post subject: |
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Corporal
Joined: 23 Jul 2009
Posts: 73
259.19 Spud Bux
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| i thought about a sprinkler valve origionally, but size is my main issue and i couldnt think of a way to conveniently ise one... |
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| Technician1002 |
| Posted: 07/26/2010 17:20 PM Post subject: |
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Senior Technician
Joined: 04 Apr 2009
Posts: 4670
15520.25 Spud Bux
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My Mouse Musket used 1 inch pipe caps that were simply sanded down to fit inside 1.5 inch pipe. The pipe was sanded out on the inside to make it slightly larger and perfectly smooth. The inside of the pipe was slightly bumpy before sanding.
1 inch pipe cap made the piston in the Mouse Musket.
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| jhalek90 |
| Posted: 07/27/2010 18:08 PM Post subject: |
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Lieutenant Colonel
Joined: 14 Aug 2009
Posts: 476
1341.46 Spud Bux
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This was made with sandpaper, a knife, a hacksaw, and a drill.
it is a paint ball mine powered by a 12g Co2 cart.
I am sure you can adapt this for use with airsoft.
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