I'm looking for an accurate plastic casting material.  Suggestions?

I've used Monster cast and similar fast curing urethanes, and while they're great for general purpose casting they tend to distort slightly.  Mostly the distortion doesn't matter, but it's a problem when making replacement faces.  On a job I did recently, the buck I used to sculpt faces on was distorted, so each of the faces was a bit off.  I was able to fix them individually with a Dremel tool.

The client wants more faces, so I'm making a new buck from one of the actual trimmed faces.  The client has the head, so I won't be able to adjust the fit on the new faces.  But I don't want to do that, anyway - I want the new castings to be "right" when they're pulled from the mold.

The new buck will be cast from UC30, so I shouldn't need to worry about that.  I'm just looking for a casting material for the faces themselves.

Thanks in advance!

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I have used BJB 808 for casting parts that need to screw together and I seems pretty good Dave

J cast resin is perfect for casts, check my blog for details

http://www.stopmotionzombies.blogspot.com

Pete

http://www1.mscdirect.com/eCommerce/NavigationServlet/Raw-Materials...

'

This is supposed to be good. Click on the "Big Book" link for the catalog page details...Anybody ever try it? I have a 4 0z. sample kit... somewhere...

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