Robert Speirs, M.D. 12 4450 on mon 2 mar 98
I have a set of what I think must be white earthenware coasters that are
somewhat porous to still be able to absorb condensation off a glass.
Unfortunately, they also have absorbed tea, Coke, and coffee stains.
I was thinking...why don't I put them in my next bisque firing to get
them clean? I've already tried bleach and the dishwasher with no
improvement. Do you think they'd blow up??? This is my only concern.
I will fire them on the bottom shelf on silica sand and cover them with
shelves. Would that be enough to protect the other work in the firing
if they did blow up???
Thanks for you imput.
Laura in Oregon
Greg Lamont on wed 4 mar 98
Hi Laura,
I had the same situation with discolored bottoms on some mugs made out a a
lowfire white body. Rather than risking the high temp of a bisque, I put
them in the oven and set it to self cleaning cycle. Not only did I get a
clean oven, I also got nice white mug bottoms back.
Regards, Greg
At 10:54 AM 3/2/98 EST, you wrote:
>----------------------------Original message----------------------------
> I have a set of what I think must be white earthenware coasters that are
> somewhat porous to still be able to absorb condensation off a glass.
> Unfortunately, they also have absorbed tea, Coke, and coffee stains.
>
> I was thinking...why don't I put them in my next bisque firing to get
> them clean? I've already tried bleach and the dishwasher with no
> improvement. Do you think they'd blow up??? This is my only concern.
> I will fire them on the bottom shelf on silica sand and cover them with
> shelves. Would that be enough to protect the other work in the firing
> if they did blow up???
>
> Thanks for you imput.
>
> Laura in Oregon
>
The Allens on thu 5 mar 98
Laura, I believe I would candle those coasters for several hours to make
sure the moisture is driven out before firing.
Carla
ridgerun@scrtc.blue.net
-----Original Message-----
From: Robert Speirs, M.D. 12 4450
To: Multiple recipients of list CLAYART
Date: Monday, March 02, 1998 9:58 AM
Subject: Refiring commercial coasters
----------------------------Original message----------------------------
I have a set of what I think must be white earthenware coasters that are
somewhat porous to still be able to absorb condensation off a glass.
Unfortunately, they also have absorbed tea, Coke, and coffee stains.
I was thinking...why don't I put them in my next bisque firing to get
them clean? I've already tried bleach and the dishwasher with no
improvement. Do you think they'd blow up??? This is my only concern.
I will fire them on the bottom shelf on silica sand and cover them with
shelves. Would that be enough to protect the other work in the firing
if they did blow up???
Thanks for you imput.
Laura in Oregon
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