Glass-Cast™ 910 investment - 44 lbs.

I loved using 910 and was thrilled with how it withstood over 514 hours casting time for the 29 pound piece I just finished. I did not use a flask for this application, but threw on layers, each colored a bit differently, and because I was scared of leakage, dipped fiberglass cloth pieces into the investment for one of the layers. The fiberglass layer was probably overkill. This work was planned for one-time use but with the strength of the mold, if it had not had so many undercuts, the material would have withstood more castings. It left a really clean finish on the glass and the only clean up I have to do is to clean up my mistakes which were many. I liked it so much I ordered 100 pounds more!