A friend recently pointed out a source of some unusual refractory materials. Rather than review the list here, I would suggest taking a look at their website. Some of these products are new to me as type not just brand of material. For instance they have a pure alumina potting liquid potting compound good for 3350F and a fused silica foam good to 3000 as well as machinable ceramics. http://www.cotronics.com/vo/cotr/cm_1.htm I have no immediate use for any of these products, but I can think of future projects where they might come into play. Just passing the info along for anyone who might find it helpful. Denis
I agree, some interesting materials there. I downloaded their catalogue and saved the address. When a need arises, I'll call to ask the magic questions, what's the minimum order qty and how much $! Best, Kelly