Whenever I want to put something together that I’m confident will not devit, especially with multiple firings, I go to Spectrum 96.  I use White, Khaki and Almond and have had no devit issues.  I generally fire on Thinfire and keep the kiln vented to 1100.  I will somethimes use Super Spray if I’m working with pieces that I have cut with the tile saw.  I am a cleaning fanatic, first using soap and water (Dawn), then Isopropyl Alcohol followed by Spartan glass cleaner.  I use an oil free cutter if I cut after I clean.  You might also want to make sure you have System 96, and not just a Spectrum white meant for stained glass work.  That will devit every time.  Tim

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