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Glenn: My dad used to be able to tell the tin side by scaping his finger nails on the glass, like on a chalk board. I was never able to pick up this technique myself, but you could always try. One side of the glass will have a little more drag to it. Key, don't scrape so hard as to get the irritatin...

Watershed: Right now, where the bulk of our costs are, is in inspection of the parts. Since we still get some release agent on glass or mold material, and with a customer who is quite particular about the quality of the parts, we spend alot of time inspecting and clean of each part. If we can improv...

Barbara C. Yes, I would like the info on this material. I am currently testing a material that is like you say, "weighs a ton." I have also tried a pure boron nitride as a release agent, which at first showed lots of promise, but after about ten firings or more would start to stick to the ...

Tom, first, I have a boss who is already on me about the length of time for a firing cycle. His background is in tempering, and although he's begining to understand the reasons for the time it takes for forming glass, he still would like the firing cycle to be as short as possible. Next, is the rele...

Brock, I have tried mold mix #6 for patching bad spots on molds, and have found that it too will stick to the glass in spots. This is a production item and I am trying to keep costs down if I can. The Kastolit 26 I use costs about $.60 per pound.

Brock,

The shapes are primarily geometric shapes. The designs duplicate three dimensional images within those shapes, also an imitation bevel effect and a variety of textures.

Jim

My situation is that I need to form 200 or more parts and the castable and release I am using do not last very long. Currently, I am using Harbison Walker’s Kastolite 26 with pure talc as my release. The glass I am using is Guardian’s 3.3mm clear float, tin side down on the mold at about 800°C ...