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In the Studio (3 posts)
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User is offline Oct 06 2012 07:16 PM
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  1. In Topic: Looking for a shorter firing schedule

    Posted 6 Oct 2012

    View PostIsculpt, on 06 October 2012 - 09:36 AM, said:

    I have always fired sculptures with walls that varied from 1/4" to 1/2" or more, so I've used a long bisquing schedule suggested to me by a very cautious functional potter friend. Probably too cautious, at 8 hours with the lid open and then 2 hours with lid lowered, then 4 hours on low and 4 hours on medium then whatever it takes to reach desired cone. But today I'm firing some small jewelry pendants that vary from 1/8"-1/4" in thickness. Can someone suggest a suitable electric firing schedule? I'm taking them to 04 to bisque and then on the next firing to 06 after underglazing, and then 06 again after washing them in copper carbonate to get the nice metallic blacks in the crevices. I wish I didn't have to fire 3 times, but I've found that underglazing my green sculptures ends up softening some details, and it's not possible to put the copper carbonate on top of the unfired underglazes since it has to be wiped off so that the cc remains only in the crevices. So as usual, I'm under the gun and looking for a way to cut some time!!


    How large is your kiln ?? You are either making an awful lot of pendants or else you must have quite a small kiln - which I presume is electric??
    Assuming your work is truly dry before you bisque - you still need a minimum 1 hour pre heat - if in doubt take 4 hour pre heat with lid cracked a couple of inches - then you should schedule to fire to cone 04 over 10 - 12 hours with a one hour soak at temperature.
    For your next (after bisque) fire to 06 - again give it a one hour pre heat and take it to 06 over 6 - 7 hours with a minimum 1 hour soak at max temperature.... This schedule should be the same for your final glaze firing.....
    Good luck

  2. In Topic: Tapping pots on center on the wheel

    Posted 25 Jul 2012

    View Postameichholz, on 02 March 2012 - 12:53 PM, said:

    I like this idea! Then you don't mar up a perfectly good pot :) Going to try it.


    Seems to me it would be easier to throw one pot....and practise 30 times on that??

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