It good that this was brought up because I am doing some casting of my own. Right now, I have been using the Alumlite RTV MoldMaking Set to create master mold of the gears found in my GBC 95P laminator. I also use Casting Craft Liquid resin for the duplicate part. I would recomend using the plastic method if you are going to make a duplicate item. Keep in mind that any imperfect features from your original will come out in a mold.
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Re: etching VS casting (Long post)
2004-02-18 by gmanca101