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Bullseye's recommended annealing temperature was established at 960F/516C around 2000, then changed to 900F/482C about a decade later. As far as I know that's still their recommendation. (It's what's written in current versions of both Tech Notes 4 and Tip Sheet 4, as well as their Annealing Chart f...

raphy wrote:Thank you, if you use the powder binded or not how many layers?

The number of layers depends on the darkness of the powder, but in general we use about 4 grains thick.

For any of you who do sgraffito, do you use powdered frit or paint. If you use frit do you mix it with aloe to paint it on. I was taught years and years ago but have completely forgotten. Thank you for any help. You can use either powdered frit or enamel/paint. Generally, we use powder dry and pain...

I suspect you two are talking about two different products. The term "luster" is often used to refer to anything that's shimmery. For example, Thompson uses the word "luster" to refer to their micas. Heapsy, to you have a link to the pottery supplier that sold you the product? Or...

Bottom elements have been used in pottery kilns because a clay piece (especially a flat piece) on a shelf at the bottom of the kiln may not get enough heat to fully fire. (Top of kiln hotter than bottom of kiln) The bottom element helps even out the heat. This is especially useful in pottery firings...

I've had a situation where the glass remained on the coils for years, so that would be my first choice. Do nothing until you eventually need to change the elements.

If anyone else has a better solution, love to hear it.

Probably a good looking "ball of light" is in the eye of the beholder. There's a lot of variation in what that could mean or look like. Still, I like the idea of a rounded clear ball over yellow gold dichroic, just use a larger "bead" rather than a small one. You could also consi...

Really hard to do that, Barry. We've had pretty good luck reheating cast life-size turtles to shine them, using a firing schedule not unlike your suggestion (only to around 1350), but the problem is having to remove scratches. That takes a higher temperature or a much longer hold and is much more li...

Havi, if it's a flat piece it can easily be fire polished, assuming the scratches aren't that deep. Just fire to 1400F/760C and hold about 10 minutes, then anneal as usual. If the scratch is deeper, you need to go high, to as much as 1460F/790C or so. If it's not a flat piece, it's a lot harder beca...

Looks like it was closer to the elements on one side than the other. Is that possible?

Generally, blue bubbles come from a copper compound. They'll give you the beautiful bright blue bubbles in your piece. If you put too much copper (usually copper oxide) it will have black ugly areas like your other piece. Firing too high can also cause this problem. My guess is that the mica you're ...

You sure it's mica powder you added? Looks like copper or a copper oxide.

New controllers do have a program (or programs) in them. It's usually not a full fledged firing schedule, but a few steps that are used to test the controller out.

How high did you fire? You'd have to fire pretty far above normal fusing temperatures to get the glass to flow off the kiln shelf.

If you tack fuse at a low enough temperature you'll keep most of the texture. 1350F/730C is high enough to stick glass together and retain most of the texture. The higher above that you go, the more texture you will lose.

Very common, especial with reds. The higher the temperature, the more likely.

Michael, According to the MSDS, Bullseye thinfire paper is manufactured in Japan by LINTEC Corporation under the name "Paper Ceraform M. " I don't know how difficult it is for you to get product from Japan, but if you want to try, LINTEC's contact information is on this MSDS: https://www.w...

JestersBaubles wrote:Looks to me like you need more glass.

I was thinking the same thing.

Photo of piece.

To help you, we'll need to know what firing schedule you used, what glass as well.

What happened when you tried to upload the picture? What format was it?