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Old 07-26-2009, 09:09 PM
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David Patchen David Patchen is offline
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Spruce Pine 87 is named very poorly because it's a 96 COE/LEC (someone fight over this!) glass.

SO--if you're going to dip a rollup in a 96 glass, the rollup needs to also be made of 96 COE glass. That's why you need to use System 96 flat glass for rollups you're planning on gathering over.

You can most definitely roll up glass that's not 96, you just can't gather Spruce Pine over it. Roll up bullseye or whatever and just use only the rollup. Some people also heat up a scrap on the rollup plate and use it on the tip of their punty so there's no incompatible glass on the punty, but I've heard this isn't critical. It's pretty simple to use compatible glass for the punty so why risk it?
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