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Thursday, October 29, 2009

I never learn

I’ve been losing way too many bowls this week. A few days ago I was throwing dessert cups and lost a third within minutes of throwing them. And then tonight when I was throwing what Christy and I refer to as our ‘low, wide bowls’ ( ‘cause we’re clever like that), I noticed later that another bit the dust. See, I put a rim on all my bowls and I’m just too aggressive with the thinness and often don’t leave enough clay to support it. I’m not sure what’s so hard about leaving more clay there. Stupidity and hard-headedness are painful and very often expensive character flaws.

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On a more cheerful note, I finally got around to making a yarn bowl. The local yarn shop has been asking about one and when another friend mentioned she wanted one I finally got on with it and made a couple to test. I left these thicker so they’d be heavier and hence stay in one place as you pull the yarn through. I have no idea how that theory will work. The aforementioned friend also knitted a little cover for a yunomi (mom, think mug without a handle. Or a little juice cup.) I had given her, and even as a guy I had to admit it was pretty sweet. She had a neat name for it too, but I can’t remember it now. Huddle mug cover maybe? Something like that. Anyway, if it was huddle mug it is because of the way many women (at least my wife and her) two hand a yunomi as if to channel every last bit of heat from the vessel to their frigid hands (get it, they huddle around it). Of course, at the very beginning the yunomi may be pretty hot, so if you have an appropriately sized knitted cover, you just slip it on until while everything cools enough to go skin on ceramic. See that way, you don’t just waste precious BTUs by doing the "’thumb on the rim, finger on the bottom” hold while you wait on it to cool.

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3 Comments:

Blogger Jason Fasi said...

Hi Mike:

I'm bothering you here about your glazecalculator.com site: could you add zirconium silicate/superpax/zircopax to the ingredients list when you have a chance?

Also, i started an online pottery forum at www.potterychat.org. i'd love to have you check it out and tell me what you think.

best of luck with the bowls.

~jason

October 30, 2009 2:47 PM  
Blogger mike said...

Jason,
I have added Zircopax as an ingredient so that you can save recipes with it. Please note that zircopax is mostly zirconium oxide and that oxide is not generally used in chemistry calculations for glazes as it doesn't go into solution with the glaze. Since zircopax is zirconium oxide and silica I added the silica amount and moved the remainder to Loss On Ignition. Of course it isn't technicaly lost on ignition, but again it is an oxide that isn't calculated.

-Mike

October 30, 2009 4:46 PM  
Blogger Jason Fasi said...

Mike,

Thanks for the addition to the calculator. One glaze I pulled from Murfitt's "The Glaze Book" had zirconium silicate listed as an ingredient of the glaze (not a % addition). It's not the greatest or most logical book sometimes. :D

~j

November 2, 2009 9:54 AM  

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