To: <puptcrit-AT-lists.driftline.org>
Date: Tue, 9 May 2006 12:28:57 -0400
Subject: [Puptcrit] Brush-On (from Smooth-On) answer!


I had a reply from Smooth-On's tech suport.

They said it would off-gas for about a year, because it is a urethane-based 
product!
Yikes! They said I could speed up the off-gas by heating the mold for 2 
hours.
Here is the answer I got, hoping it would help some people.
I might find a heat lamp or something to do this outside this summer.


>
>The rubber you used is a urethane product.  It will off gas this order for 
>aprox. 1 year.  The only thing
>you can do is to post cure the mold.  This is done by using heat lamps
>or an industrial over. Do Not Use your house oven!   Heat the mold to
>aprox. 100 degrees F for 2 to four hours then allow it to cool
>gradually.   It may however continue to off gas for a few more weeks
>after post curing.
>
>In the future,  I suggest using Silicone rubber for mold making.  We
>have a skin safe silicone rubber called Body Double make specifically
>for life casting.  OR if the mold is going to be made of an inanimate
>object, you may use Rebound 25.
>Regards,




Mathieu René Créaturiste
Marionnettes, Masques, Etcetera...
Puppets, Masks, Etcetera...
www.creaturiste.com
creaturiste-AT-magma.ca
(514) 274-8027 

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