RTV Silicon casting

Thought I was heading in the right direction but ..... proved me wrong. I was going to do a simple casting of scales on a fish using silicon out of the tube. I purchased GE 100% Silicon and mixed in a dab of Acrylic paint and it never did set up? Then I mixed in a little glycerin and that did not help. I thought the last time I did this all I used was the paint and it set up in about 15 min.? Where am I going wrong?

 

Steve, the tube says Silicon II

Think I found the answer.... I'm taking the Silicon II tubes back and getting the Silicon I. Everyone talks about the smell and I know its the acetic acid. Maybe this will help others.

The one difference between GE I and II besides binding properties is the way they cure. GE I cures via acetic acid and GE II via ammonia.

 

Re: RTV Silicon casting (UP Date)

Up Date...... I just finished up using the GE Silicon (I) and it worked and acted just like it's supposed to.....taaaa daaaa. This confirms that "Do Not Buy GE Silicon II. I also checked the tube and it did cure with Acetic Acid NOT Ammonia.