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i fired a piece (on ThinFire) that had some silver foil decorations on it. The shelf was stained on areas not covered by the TF.

Will future firings on TF, on that shelf, be subject to staining?

@Dana:

Those tips are great help - thanks. Besides giving guidance for slumping a new mold, they allow me to parity check my schedules I've worked out independently over the last 5 years or so.

Here ya go:

Have you used either of these? Easy slump? Or difficult? Got a picture of the final product?

Thanks!

It looks to me (can't really tell from the image) like you might have a gap in the design pieces. If so, I'd take pains to remove the possibility of a bubble if you Flip 'n Fire.

Good start to a "Glass Hacks" thread - thanks!

@Don: Won't she run the real risk of filling the clear areas with air-laden, cloudy masses?

Two side-by-side on-edge strips would be 1/4" of clear. Could you stack 1/4"-wide clear strips NOT on edge, so that they don't show any joint lines?

Interesting thought experiment. I'd like to see actual results. Then some results with varying diameter ratios.

@Tony:

Thanks. This thread seemed to drift quickly into discussions of compatibility - my original questions were posed solely to find out more of the innards of 'COE' - especially as the term is bandied about in this and other contexts.

(Showing exponents is a challenge, isn't it?)

@Rick:

I'm presuming that what you're referring to as "way more complicated" is the issue of compatibility - correct?

Questions regarding the term "COE": Is this a measurement of Linear expansion? Volumetric Expansion? Something else? What are the units of COE as it's used in the glass fusing context? Isn't a COE number relevant to some particular temperature interval? And if so, is there agreement among ...

The Orton controller on our Paragon Fusion 10 kiln takes 30A TF 3 relays. Anyone know of an alternate source for these that's cheaper than Paragon ($30.25)?

@Suds: Any way to modify your baby-sitter to measure and accumulate the time the relay is energized? It'd be fun to know the distribution of on-times, wouldn't it?

And I in no way was trying to imply that I had any kind of an idea how to compute an accurate count - I was just trying to come up with some ROM. On my controller, it sounds like the relay makes, and then drops out after about 1-2 seconds. If the schedule is on the way up, with any kind of medium ra...

A cycle every 6 seconds would be 10/duty minute, 600/duty hour. My costs per firing are about $1.80, and it's a 7200W kiln. I pay about 10 cents per KWH, so I use about 18 KWH. so that's about .5 duty hours for the complete firing cycle. Hence maybe 300 cycles? Have no idea if that math holds up - I...

Thanks, Cynthia. I'm pretty sure, now, that it was foil that I had - not leaf. I had used some copper foil and it was so much heavier (thicker) than the silver I was using, that I just assumed that what I had was leaf. Anyway, I ordered some of the BE foil and it's identical, as best I can tell, to ...

About 6 years ago I got some silver leaf in sheets that were about 7.5 in. sq. I've about used that supply up and need to get some more. The original packaging shows no sign of who the original vendor might have been. It does carry the code "TS0217" on it, though. All I can seem to find ar...

If this picture is of the results of the first fuse, I'm impressed by how well you matched the outside curves on the individual pieces.

The catenary is an Interesting function that describes the shape defined by a wire, chain, or rope, etc. suspended between two supports. It is given by: y = a cosh ( x /a) where a is the distance between the two supports, and 'cosh' represents the hyperbolic cosine function. (I just knew a math majo...