>> What I'm looking for is a material to cast the windings in. 012345678901234567890123456789012345678901234567890123456789012345678901 23456789 Some of the rocket people are looking at sodium silicate ("Water glass") plus talc, which is described as an adhesive that can retain strength at red-heat. Other types of "furnace cement" might also be appropriate. BillW -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist