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How to Cast an epoxy barrel?

A place to ask general spud cannon related questions.
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Unread postAuthor: jackssmirkingrevenge » Wed Sep 07, 2011 2:05 am

Technician1002 wrote:Normal way to do this is to lay up a fiberglass or carbon fiber tube on a mandrel. Resin alone will be too weak.


You can mitigate the strength issue with a strong sleeve.

One other technique I've used that helps reduce wear is to bind the mandrel tightly with wire, it adds a lot of metal contact area and adds strength.

Again I must stress that this is a last resort, where possible tubing should be purchased commercially.
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Unread postAuthor: Goats spudz » Wed Sep 07, 2011 9:31 am

i want this for my barrel Image
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Unread postAuthor: jackssmirkingrevenge » Wed Sep 07, 2011 10:56 am

No, you want this ;)
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Unread postAuthor: Goats spudz » Wed Sep 07, 2011 11:03 am

but i need it air tight for my magazine
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Unread postAuthor: jackssmirkingrevenge » Wed Sep 07, 2011 11:05 am

A diagram of how you intend to put it together would be helpful...
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Unread postAuthor: Goats spudz » Wed Sep 07, 2011 2:56 pm

Image oh and how do you upload pictures to spudfiles like you jsr?
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Unread postAuthor: jackssmirkingrevenge » Wed Sep 07, 2011 10:44 pm

http://www.spudfiles.com/forums/posting ... 13190.html

You can still incorporate the brass barrel into this design.

Here's the mould I made to cast a similar design:

Image
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