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About Mark C.
- Currently Viewing Topic: Full Shelves or Half Shelves in Electric Kilns
- Birthday 03/15/1953
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Website URL
http://www.liscomhillpottery.com
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Location
Near Arcata Ca-redwood rain forest
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Interests
Diving-underwater photo-salvage diving-dive Travel
Extreme offshore tuna fishing off north coast of Ca.
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Orton Autofire Slide "Thermocouple Response" Error
Mark C. replied to g-bus's topic in Equipment Use and Repair
You should talk to Orton about shorting out that connection -
HenryBurlingame reacted to a post in a topic: Full Shelves or Half Shelves in Electric Kilns
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Hulk reacted to a post in a topic: Full Shelves or Half Shelves in Electric Kilns
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Full Shelves or Half Shelves in Electric Kilns
Mark C. replied to HenryBurlingame's topic in Equipment Use and Repair
I am a all porcelain shopcone 10 firing gas. I would make my own wash and remove with a wet sponge before firing any commercial wash as it usually poor quality. Speaking of quailty wash I noticed on the Advander shelves (kiln shelve.com ) site they use the same formula as I posted years ago 1/2 alumina hydrate 1/4 epk 1/4 calcined EPK or (glowmax) I apply a VERY thin coat with a paint roller after shelves get warm in sun and when dry scrap the edges of wash -
Babs reacted to a post in a topic: Full Shelves or Half Shelves in Electric Kilns
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Pres reacted to a post in a topic: QotW: What sort of "trimming platform" do you use?
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I have a seperate trimming station its a small Brent Model A wheel with a few Griffen Grips. One is set up for regular sliders the other is set up for arms. Back when I was really producing tons of wares I could just snap one off and use the right one without time switching parts. Now I'm doing less and its not critical . I also have the griffen huge platter trimmer hanging on the wall but I have not used it in a few years so it may have to go up for sale. Not making mondo huge platters anymore. These are all time savers if you are in the business of pottery production
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Full Shelves or Half Shelves in Electric Kilns
Mark C. replied to HenryBurlingame's topic in Equipment Use and Repair
Morgan Post placement still needs to be about the same. Its not about warping but the thermo load.When loading the bottom the stilts need to be lined up as the thermo load is great with all that weight at bottom, as you get to the top of the kiln it is not as critical. Its always best to line them up when you can. Even advancers cannot take huge offsets due to weight at high temps. They can break from that stress of uneven thermo loading.You have been lucky so far would be my guess.I have had corners crack odd from uneven sharp posts even thougfh they are lined up underneath. Of course my cone 11 load is often 5+ feet tall so the weight is great . In terms of more wares from this shelves you now know they pay for themselves pretty fast with extra space. And your back is better from less weight loading. Its amazing really as they are all upside other than the cost which is recouped the more you fire. -
Pres reacted to a post in a topic: Have glaze chemical prices forced you to make changes in your White glazes?
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Rae Reich reacted to a post in a topic: Really old Amoco potter's wheel
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I was a horder of materials in my mid carreer so I have all the tin I need back when I used a lot and it was cheap and buying 1 ton of Gerstley was dumb luck long ago and thats what is in my white liner which we use a lot of these days . Now days I never worry about price of materials if I need it I order it.
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Full Shelves or Half Shelves in Electric Kilns
Mark C. replied to HenryBurlingame's topic in Equipment Use and Repair
They are great shelves same as advancers in every way only cheaper -
help! How hot does this kiln get? Quality?
Mark C. replied to chloemmetcalf's topic in Equipment Use and Repair
Photo did not show up-ok you added it now. looks like a pottery kiln.I'm still guessing cone 06 low fire- 15 replies
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Rae Reich reacted to a post in a topic: vacuum recycled clay to remove air pockets
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Rae Reich reacted to a post in a topic: How hot does this kiln get? Quality?
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Rae Reich reacted to a post in a topic: How hot does this kiln get? Quality?
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Cone 10 Cobalt Blue w/o Soda Firing
Mark C. replied to sommerjono's topic in Clay and Glaze Chemistry
This looks more like a salt pot to me than soda. if its soda its a lot of soda -
Rae Reich reacted to a post in a topic: New Skutt Wheels
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Full Shelves or Half Shelves in Electric Kilns
Mark C. replied to HenryBurlingame's topic in Equipment Use and Repair
I like a full shelve on bottom in an electric supported at all stilt point off floor . With advancers you have two options one is kilnshelve.com the other is Bailey ceramics which are the same as advancers but usually alot cheaper. I have over 50 advancers in my gas kilns (selling 24 extra of these now on potters web) these are all 12x 24. I started testing Bailey Germany made advancers (not called that) years ago ands they are the exact same shelve only the corners are more rounded. I bought last fall 20 14x 28 from Bailey (about 7k) and have fired them in 13 glaze fires to cone 11 and as the others are super flat -thin and pay for themselves in space right away. Consider them the same as any advancer. The deal with any of these shelves is the shipping pack up charges as that can add 30% to cost. Bailey came out way cheaper on that as well. -
help! How hot does this kiln get? Quality?
Mark C. replied to chloemmetcalf's topic in Equipment Use and Repair
Maybe a cone 06 low fire kiln .1800 degrees- 15 replies
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help! How hot does this kiln get? Quality?
Mark C. replied to chloemmetcalf's topic in Equipment Use and Repair
Photos of the inside would help but my guess is this a glass annealing kiln by the looks of shape and handle on lid.That means its not for ceramics. This brand I think is pretty old-call Alpha Fired Arts in Sac and ask abouit when they went out of business as well as what type og kilns they made.- 15 replies
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I do not like the shimps I have demonstrated on.That being the wisper.Or the oldser lever conested to foof pedal cone drive. You could look for a used Brent.
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vacuum recycled clay to remove air pockets
Mark C. replied to philmid's topic in Studio Operations and Making Work
All good pug mills use vacuum systems but it works as the clay is being beat up with a screw during that process exposing the air under vacuum. The bowl I do not think will have any effect. Wedging will remove them if done right -
I only use Brent wheels -I have a model A (1/3hp) for trimming and Model B (1/3 hp) and a model C 1/2hp to thrpw and a CXC for throwing .They use IR and I like it. I cannot imangine not having it. I have demonstrated on a whisper shimpo and it was super quiet but I could stall it with medium size clay and a load on it. I would never as a pro have one. Its a great beginner or lite use demo wheel. I'm a brent fan and yes they make noise but its never been an issue as I like music and hear it fine and can talk just fine while throwing. I have zero red skutt experience.
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HP rating are not all the same -that said 1/2hp is usually enough for all size pots one could ever what to make. The 1/3 hp is a bit weak for larger work