- A staple in the glass casting community
- Widely recognized as the strongest mold material available for glass casting on the market today
- The glass caster's best choice for large pieces or configurations that will place significant stress on the mold material
Package size: 50 pound
Made in the USA
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My work flow is to sculpt in clay, 3D scan, 3D print, and do lost plastic casting in glass. Glass-Cast 910 stands up to the drying, burnout, and casting cycles. I give it 5 stars.
I have already made several molds for glass casting and I really like this material.
It's much easier to use than Castalot or plaster - and seems to produce very nice molds.
I really liked the calculator for determining water and investment ratio.
I'm mixing with a mixer on a drill - that works well.
On one of 4 molds I made yesterday I tried to push the mold out of its plastic container too soon - and the mold cracked. The other 3, where I waited a bit longer were just fine. You may want to mention that letting mold set for at least 1/2 hour improves quality in your usage notes.
Overall I found your usage notes very helpful but I am still learning some stuff on my own.
I am casting both glass and bronze on an artist level and this pushes the upper limits. 910 never fails; it is strong and gives fabulous detail results every time. Stick to the water powder ratio carefully, make sure to use cold water.
Great product and technical support
I loved using R&R 910 and was thrilled with how it withstood over 514 hours casting time for the 29 pound piece I just finished. I didn't 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 hadn't 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!