Rae Reich
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Posts posted by Rae Reich
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A description of using silica sand in a saggar for support of fragile work during firing ^
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12 hours ago, Cylena said:
Interesting point! I’ll ask the kiln tech if there’s a tray available.
You can make a custom one and bisque it while making more branch tests.
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Oh, that is a lovely green! It looks enough matte, though, to use a liner glaze with it on food surfaces. A white with tin in it could blush nicely at the lip of a vessel. (Use a liner because a matte glaze doesn’t clean as well as a gloss and can harbor bacteria over time, not to save the user from leaching-chrome exposure.)
I think you’re right that the cobalt, besides modifying the chrome, also helps to keep it from ‘browning’ or to rescue a brown by sending it toward blue - like the little-bit-of-cobalt “cheat” in copper reds that rescues an uneven reduction red from ‘snot green or bleached white to soft blue (I learned this from a Tom Coleman student).
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I wonder if some of your breakage during firing is due to the irregular shapes of the branches, so that they do not rest their weight equally on the points of contact with the shelf. Maybe a shallow, silica sand filled tray to nestle them in so that they’re resting on the sand all along their lengths?
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Absolutely beautiful, @Hyn Patty!! I really appreciate the look behind the scenes into the mystery of assembling that challenging pose. Thank you for sharing and inspiring.
(giggle) Fabio tail!
How do you scale your creations?
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I like a broad shallow bowl with room for wetting, scraping both hands at once and for pulling handles over. I throw pretty dry, using slip/slurry and a chamois. Big water bucket for more washing and rinsing of tools.
I just recently got one of those paint buckets with a handle, for painting, and then saw them being used by potters. Too narrow for me!
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Remembering my student days, the experience of actually handling pots made by acknowledged fine potters was given to us by a teacher who brought us in contact with contemporary fine potters.
Consider a collection donation, documented as well as possible, to a favored school with a ceramics department. A “library” of pots available for reference would be wonderful inspiration. (I’m assuming that most of the works that we have accumulated are not ‘museum quality,’ but what we could afford.)
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I’m not too worried about “the youth,” @Pres. I saw a young potter on the Great Canadian Throwdown describe the coil-building technique as “like a 3D printer.”
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Clay adapts to people and our needs.
I’m starting to look for inheritors for my stuff. There are also our collections of significant (to us) pots - I’ve begun to redistribute some.
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@Katie S Is the porcelain cast dinnerware?
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Sponges, chamois, plastic, all sorts of tools over the years in our ceramics lab recycle in college. Those chamois really disguise themselves!
In commercial clay, a supplier, who was gradually going out of business, ran their rusting pug mill to the bitter end. We found chunks of rusty pugger in nearly every bag. No major injuries, but a challenge to throw. I was able to complete an 8” vase while leaving a 1/2” square of pugger in the wall, about halfway up, even while ribbing it out (carefully) as much as possible. We were curious about how it would fire. The fragment melted out and left a trail of mostly iron down the side beneath a tidy hole. ;p
That Franklin Adams clay was really nice and a dream to throw, even so.
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A thicker rim will hold its shape better, if you can work that into the design/construction.
Q: is it strictly necessary to have a perfectly round rim? The intriguing soft appearance of your sculpture does not, to me, require a perfectly circular rim.
- Bernardita Cossio and Min
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Nice work! I like the color, glaze technique and surfaces.
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Plates take up a lot of kiln space! The skills to make consistent, flat, even-bottomed thrown plates need as much repetition as the other forms, so as many failures as need to be expected can be ‘time and kiln space’ expensive.
I like hump-molded slab plates with a foot ring of a coil added . Foot ring can be thrown on if the mold is attached to a bat. Remove from mold immediately before clay begins to shrink by flipping it over onto another bat. I put a few sheets of newspaper (please support your local newspaper!) or dispenser-type heavy paper towel on the drying bat so that the plate can shrink/dry without sticking to the bat.
Placement of the foot ring can help or hinder the flatness of the finished plate. Look at many examples carefully to make the best choices.
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@Reza Hosseiny, that will depend on if your gold luster matures enough at ^019. Generally, that rule applies to planned application of layers. You might try for a temperature a little closer to the previous one, if you have that much control over your firing.
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Lusters are tricky because they are so sensitive to firing temperatures and each subsequent firing has to be just a little bit lower than the last to prevent burning off previous work.
Refire the piece to a bit higher than the first gold firing to burn it off and start fresh.
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10 hours ago, Mudfish1 said:
is it hard to get good reduction throughout such a small volume?
Small changes, many notes.
If there are sweet spots, you can plan around them. Nice to have a red that is acceptable in oxidation.
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Generally, pouring all the water over all the dry can result in a lump of dry stuck to the bottom of the bucket which is a bit harder to mix in - @Kelly in AK’s solution is another instance of patience doing the work while we do something else.
- Hulk and Kelly in AK
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Probably be helpful to use red stoneware for the cone packs to better gauge reduction.
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Old credit cards make good bench-scrapers and ribs. They can be cut into any profile needed for shaping and trimming pots, smoothing seams and surfaces. Notching the edges of the card will give you many kinds of texture possibilities.
- Min, Babs, Kelly in AK and 1 other
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Since you have a deadline, it may be impossible to remake the piece in time. In that case, I would go ahead and fire the piece. Those cracks are not likely to expand to the point of destruction unless additional stress is put on it during the firing. You may need to accept the modifications to your piece as part of the process, maybe even emphasizing stress lines with glaze or coloration to incorporate them - an “I meant to do that” approach
If there’s a possibility of completing a new piece in time (using and improving on what you have learned so far) I recommend that you make two or three at the same time as insurance, or at least the greater likelihood, of a piece completed as you envisioned. And maybe you’ll have a series!
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As long as you only make matcha it will be fine. The seepage of tea into the cracks enhances the pattern. However, don’t use with beverages that contain sugar or milk as these tend to encourage bacteria.
I’m guessing the price was lower because of the cobalt smudge in your first photo, which would make it a second.
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Do the members of your studio make their own glazes and/or clay bodies? If not, the materials could be donated to a local school with a ceramics department.
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Any thoughts on what is causing my glaze problem?
in Clay and Glaze Chemistry
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You might try slightly dampening the black areas of the bisque before applying the glaze. Blot with a sponge for small areas or a quick dip in water.