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Breech Loader

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Breech Loader

Unread postAuthor: noobyspud » Wed Oct 22, 2008 5:25 am

Hey guys,

I was just wondering if, when making my breech loader i could use a ball valve ? You know when you drill a whole through the side ? Yeah well i was wondering if you would be able to drill through the side of a metal ball valve. The reason why i ask this is because im not sure how i would do a breech loader using a pvc ball valve because i don't know how i would connect it to copper pipe ?

thanks guys
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Unread postAuthor: VH_man » Wed Oct 22, 2008 5:34 am

why wouldnt you be able to?

I assure you, it works fine. Many people have used metal Ballvalves as breeches as such.
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Unread postAuthor: noobyspud » Wed Oct 22, 2008 5:36 am

what drill head would you recommend ? Any special kind ?[/quote]
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Unread postAuthor: VH_man » Wed Oct 22, 2008 5:42 am

no, just a powerful drill.

Really, the trick is not pushing really hard, and to make a small hole first to guide your larger hole. If possible, make a dent on the outside where you want to drill before you do, it helps keep your drill on track.

Other than that, its just like drilling wood......
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Unread postAuthor: MrCrowley » Wed Oct 22, 2008 1:00 pm

If you don't have the most powerful drill or strongest drill bits, i'd start at about a 3mm bit, then work my way up with 1.5mm or 2mm intervals.

E.G 3mm, 5mm, 7mm, 9mm...
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Unread postAuthor: Gippeto » Wed Oct 22, 2008 1:17 pm

I'm really surprised no one mentioned it already, but DO NOT hold this in your hand and drill it.

If the bit slips, or grabs the work, your hand is the thing that is most likely to get damaged.

Use a vise. :)
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Unread postAuthor: mark.f » Wed Oct 22, 2008 2:58 pm

Well, that should be common sense.
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Unread postAuthor: VH_man » Wed Oct 22, 2008 5:10 pm

Not so much... I suffered a large hole in my hand from doing that... Learned my lesson real well.........
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Unread postAuthor: FishBoy » Wed Oct 22, 2008 7:08 pm

I got my hand mauled by the spinning top of a sprinkler valve like that.
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