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smart method to make fins, but how to implement this:

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smart method to make fins, but how to implement this:

Postby omg » Fri Apr 01, 2005 12:20 pm

Eric from EH had this on his board building pages that he has some soft material brick, like wax, into which he just pressed the original fin vertically and pulled it off then. This way he got a hole in the brick so he had the exact copy of the original fin. Then he just filled this hole with epoxy and fiberglass stuff to get the duplicated fin.

My question is, what stuff would be suitable to be used as a mold, so it should be a soft material into which you could press the fin but naturally it should stay and not bounce back to its original form.

I haven't been able to find the wax which could be used, so other material suggestions appreciated!


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Postby zfennell » Fri Apr 01, 2005 12:48 pm

I'm sure he was using something similar to
silicone casting compound.

liquid prior to cure.
sets up as a flexible/elastic compound.
use mold release on fin to allow removal from mold.

you should be able to find similar stuff in a hobby shop.
(molding compound,liquid casting material, etc)

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