how to make metal mold copy of this

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Offline jojo77m

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how to make metal mold copy of this
« on: 30/09/2010 12:31:16 »
I have a keyring from 1989 with sentimental attachments.
http://img840.imageshack.us/img840/6789/bttf.jpg

is there anyway i can make a copy of this?
either pay for it to be reproduced so i wont loose it, or embed it in clay and do a diy metal casting? is this even possible?

does anyone know? any help would be appreciated

thanks

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Offline RD

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how to make metal mold copy of this
« Reply #1 on: 30/09/2010 14:51:33 »
There is a technique called cold casting which can be safely done at home* : powdered metal is mixed with polyurethane resin poured into a silicone (flexible rubber) mould of the object you wish to duplicate. The resin solidifies giving a reasonable facsimile of a metal cast, without the need for burny-burny molten metal.

A cold cast copy won't have the strength of cast metal, so this attachment point could break off on the copy ...

[attachment=13044]

I suppose you could embed a metal attachment loop in the cold cast copy to avoid this weak point, e.g. an old key.

[* in the garage / shed or other well ventilated area, the stuff stinks ]
« Last Edit: 30/09/2010 15:31:52 by RD »