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mug glazing

updated mon 10 nov 97

 

Phyllis Greene on fri 7 nov 97

I'm sure that someone will be able to help me with this glazing problem.
I,m glazing mugs for ^5 porcelain firing. I have noticed that the
bisque mugs are very dry and slurp the glaze like mad. I use tongs, dip
the mug bottom first into the bucket for less than 2 seconds and put
straight out. This seems to create some overspill and really shows on
the porcelain. I've tried scraping some of the added glaze off with a
tool but it really shows marks. I've also just used my finger to rub
the glaze some but still shows darker where I have the over spill. I've
have used a wet sponge on the outside of the mug before dipping, but
just can't seem to get a even dip. I also dip the red stoneware mugs the
same way, but the stoneware seems to be more forgiving and the over
spill does not seem to be so noticable.

Thank you in advance. Where in Kingston,Wa the wet weather has
returned.

McCoy, Jack Eugene on sat 8 nov 97

You might consider thinning your glaze a bit.

Another thing that might help is to fire your bisque ware a cone higher.
This should reduce the porosity of your mugs, so that they won't soak up
the glaze so quickly.

Jack

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Jack McCoy
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East Carolina University
Voice: (919) 328-6855
Fax: (919) 328-4258
email: mccoyj@mail.ecu.edu


> ----------
> From: Phyllis Greene[SMTP:pmgreene@kendaco.telebyte.com]
> Reply To: Ceramic Arts Discussion List
> Sent: Friday, November 07, 1997 7:58 AM
> To: Multiple recipients of list CLAYART
> Subject: Mug Glazing
>
> ----------------------------Original
> message----------------------------
> I'm sure that someone will be able to help me with this glazing
> problem.
> I,m glazing mugs for ^5 porcelain firing. I have noticed that the
> bisque mugs are very dry and slurp the glaze like mad. I use tongs,
> dip
> the mug bottom first into the bucket for less than 2 seconds and put
> straight out. This seems to create some overspill and really shows on
> the porcelain. I've tried scraping some of the added glaze off with a
> tool but it really shows marks. I've also just used my finger to rub
> the glaze some but still shows darker where I have the over spill.
> I've
> have used a wet sponge on the outside of the mug before dipping, but
> just can't seem to get a even dip. I also dip the red stoneware mugs
> the
> same way, but the stoneware seems to be more forgiving and the over
> spill does not seem to be so noticable.
>
> Thank you in advance. Where in Kingston,Wa the wet weather has
> returned.
>

David Hendley on sun 9 nov 97

Here are some possible solutions to stop your uneven glaze application,
presented in decending order (try #1 first):

1) thin the glaze slop to a thinner consistancy

2) forget the glaze tongs
glaze the inside and outside in 2 separate operations, overlapping just a
'hair' at the lip

3) change your dipping technique - slide the mug into the glaze at an angle
-- dipping straight in & out, bottom first, must create a lot of 'waves'

4) dip the mug in water, so it is damp, just befor glazing

5) bisque fire hotter to reduce absorbancy

Best of luck,
David Hendley
Maydelle, Texas


At 07:58 AM 11/7/97 EST, you wrote:
>----------------------------Original message----------------------------
>I'm sure that someone will be able to help me with this glazing problem.
> I,m glazing mugs for ^5 porcelain firing. I have noticed that the
>bisque mugs are very dry and slurp the glaze like mad. I use tongs, dip
>the mug bottom first into the bucket for less than 2 seconds and put
>straight out. This seems to create some overspill and really shows on
>the porcelain. I've tried scraping some of the added glaze off with a
>tool but it really shows marks. I've also just used my finger to rub
>the glaze some but still shows darker where I have the over spill. I've
>have used a wet sponge on the outside of the mug before dipping, but
>just can't seem to get a even dip. I also dip the red stoneware mugs the
>same way, but the stoneware seems to be more forgiving and the over
>spill does not seem to be so noticable.
>
> Thank you in advance. Where in Kingston,Wa the wet weather has
>returned.
>
>
David Hendley
Maydelle, Texas
See David Hendley's Pottery Page at
http://www.sosis.com/hendley/david/