(just click on blue sections at the site and it will give you some written information on Mold Mix 6 and "user Guide" as well.) (when reading the user guide for Mold Mix 6 , please note that Zircar has not updated the firing schedule section for some years now , so please use the Bullseyer glass firing schedule for thick work.)
Here is a link to some products by Zircar Refractory comp. Yes they are very helpful. I have used their product for years, and have worked closely with Thomas Hamling to try to develop Mold Mix 6 for glass artists. It has it's good points and some very important points that if not followed correctly, you will waste this incredible product just by leaving it out in the open. If anyone is interested I believe I have a pdf on it, and how to use it for flameworking and for kiln casting.
This link has a few other moldable products as well. Take a look and see if anything is helpful.
Also from here is a PDF under Beadmaking and Moldmaking!
The amber girl with the basket on her head was cast in Mold Mix 6 at a Pilchuck Residency. I will nearly always back with sand when casting full size molds like this. We use Bullseye Shelf primer as a release inside the mold when casting to get this clean surface of the glass.
If you have any questions, do not hesitate to ask.