Re: RTV molds with SL5410

From: Ray Brandes (
Date: Mon Feb 22 1999 - 14:37:18 EET

Something in your model or the mold release you used on it inhibited the curing
of the RTV. Check with Ciba to find out whic-h. We are using vasilene thinned
with naptha (5 to 10 naptha to 1 vasilene) as a brush on r-elease for silicon
casting. We are using GI-650 from Silicones Inc.
Call Jimmy Joyce at 803-854-9018, Plastics Tooling Supply Co.
Regards, Ray Brandes wrote:

> Dear List:
> Has anyone had trouble using Ciba Geigy SL5410 as a master for RTV molds?
> We molded some platinum based RTV rubber around our master and where the
> rubber was in intimate contact with the model, the rubber didn't setup very
> well. It was very sticky.
> Regards,
> Jerry Salhus
> For more information about the rp-ml, see

For more information about the rp-ml, see

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