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 Posted: Mon Nov 03, 2008 5:15 pm |
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| Slavia |
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| Location: Waseca, Minnesota, USA |
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I had a need for shim washers in the .005" - .010" range, O.D. to fit inside a muzzle brake, and I.D. the same as the brake's exit. This is what I did:
The aluminum in a soda can is about .006", so I folded a sandwich slightly larger than the brake:
I bought two steel washers about the same size as the brake's interior, and with a hole the same size as the brake's exit:
A bolt/nut to fit:
And the correct drill bit:
The stack is clamped between two pieces of wood:
The inside hole is formed:
The result:
The drilled pieces are clamped between the steel washers on the bolt and roughly trimmed with aviation snips:
The bad pieces are thrown out:
The sandwich is spun with an electric drill against a belt sander:
Everything (aluminum and steel) is ground down until it fits:
The pieces are separated:
The burrs are swept away with a sharp knife:
I've done this with steel pallet bands, and also with milk jug plastic. (In the case of plastic, grind down the steel washers first. Then use a scraper to form the plastic. Grinding will melt it.) |
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| Posted: Mon Nov 03, 2008 5:46 pm |
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| Alstone |
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| Location: Linconshire, ENGLAND |
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Nice idea Slavia but what do you do with the shims (baffles maybe ?)
Al |
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| Posted: Mon Nov 03, 2008 6:44 pm |
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| yourdaddyjoe |
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| Be nice Al... He is thinking outside of the box |
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| Posted: Mon Nov 03, 2008 11:52 pm |
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| Slavia |
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| Joined: 31 Mar 2008 |
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| Location: Waseca, Minnesota, USA |
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| Quote: |
| what do you do with the shims |
I used them to position the muzzle brake on the barrel for maximum accuracy. See this:
http://www.airgunhome.com/agforum/viewtopic.php?p=18029#18029
I used this same technique to make steel washers for the G1's trigger, and my 2240 has some plastic washers made in this way. |
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¡Listo! ¡Apunte! ¡Fuego! |
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| Posted: Wed Nov 19, 2008 4:31 am |
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| Amigo |
| Veteran Member |
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| Joined: 18 Sep 2008 |
| Posts: 263 |
| Location: U.S. MidWest |
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Slavia:
I believe it was Ben Franklin who said something about necessity being the mother of invention. Being the ambassador that he was, he omitted the part about the necessity of the brains to father it.
Good work!
Amigo |
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