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Lauri Levanto wrote:If you happen to have old fashioned iron fillings in your teeth, you can test the tin side by licking. If you lick the tin side, you felel slight electricity. With air side not.
Remember to reclean the glass after that.

Fortunately I don't have any. But I can check my neighbourhood

Rick Wilton wrote:in my experience 3mm float by it's self is a nightmare for devit. I don't fire anything less than 6mm and 90% is 10mm +

You mean that devit depends - among others - on thickness??

This was my first thought too, but while foruming, I test fired another piece of glass. It is a single layer 3mm float. Now the outer side came out with that slight silky finish. Just the ring area where the glass bent. I'm quite confused... There are 2 different causes for fogginess. One is tin bl...

This was my first thought too, but while foruming, I test fired another piece of glass. It is a single layer 3mm float. Now the outer side came out with that slight silky finish. Just the ring area where the glass bent. I'm quite confused...

Thank you too for answering. getting the tin layer off the glass sounds very interesting and it would be good to try. Unfortunately in my country CRL water spot remover (just as Spray A and many more materials for fusing and casting) is not available. It would be good to know its ingredients, maybe ...

Thank you for your answers!
I'll get a UV light soon to avoid this problem.
Thank you Bert for the details on other aspects of the tin side, I'll keep them in mind for the future.
Eva

Yes, float. What's that? I've tried to google it, but nothing found.
Can I avoid that by higher process temp?
Eva

Hello, first happy new year to everyone! I'm a newbie, and I made only very few experiments with fusing and slumping. While my fused pieces come out as I expected them, I have some problem with slumping. I always (3 times so far :-)) get a matte surface where the glass deformed. In the center of the...