Janet H Walker on sat 25 oct 97
...If attachment is the problem, use plain, cheap, white vinegar.
Ron Roy says he doesn't even score when using vinegar.
[Supressing many remarks about Ron Roy not scoring... Sorry about
that Ron. You do take a lot of good-natured teasing on this list.]
I have some reservations about the vinegar thing. I tried that too
but I think it may be subject to some of the "it depends" gremlins.
The pieces looked fine when dry but tended to separate along the
seams in the firing. In fact, I have one beauty gaping wide open
its full height and sagging sadly. I've kept it to remind me about
why I'm not just attaching with vinegar at this point. The clay I
was using is the Miller/Laguna 16, grolleg ^6 porcelain. It is
tricky to join anyhow in handbuilding and it just wasn't up to the
stresses of vinegar. I'm not sure I understand why it didn't work.
That clay takes longer than some to absorb moisture. Maybe the
vinegar didn't work itself far enough in. Maybe I needed more
vinegar than I was using. Maybe the clay shrank more than the seams
and pulled them apart that way. I dunno. Ron?
But by the way I've been quite successful with this same clay in
patching cracks in greenware using slip made with vinegar and ground
up clay body. Just spackle up the crack. This is what makes me
think maybe it is a differential shrinkage thing.
Jan Walker
Cambridge MA USA
Edward D Cowell on sun 26 oct 97
About a month ago I took a recipe off Clayart for Spooze - a type of slip
mixture for attaching handles, etc. in the soft and leather hard stage. I
can't give enough praise to this mixture and the success I have had
with it. In the greenware stage, it also repairs fine cracks, and I even
reattached a piece I had accidentally knocked out of the rim of a dry bowl
as I was putting it in the kiln for bisquing. This later procedure took a
little more time as I had to gradually build up the slip and then sand off
the excess once it had dried. I now have a container for each type of clay
I use.
Had tried the vinegar method and never really succeeded, but this stuff is
incredible.
Just mix equal parts of - finely crushed dry clay
- vinegar
- cornsyrup
Add a shot of hydrogen peroxide to keep it "sweet". And mix thoroughly
with a blender.
Laurie Cowell,
Waterloo, Ontario, Canada
Steve Mills on sun 26 oct 97
Jan,
Can I stick my nose in here. This is re. a previous disscusion on the list;
subject:Vinagers. I have always used the home brewed - live - organic variety
as most of the ones you can get in supermarkets etc. have had the fermenting
process "killed off" and it's the presence of the yeasts that seems to do the
trick.
Steve.
Steve Mills
Bath
UK
Suzanne Storer on mon 27 oct 97
Steve,
And where do you buy such vinegar?
Suzanne
>----------------------------Original message----------------------------
>Jan,
>Can I stick my nose in here. This is re. a previous disscusion on the list;
>subject:Vinagers. I have always used the home brewed - live - organic variety
>as most of the ones you can get in supermarkets etc. have had the fermenting
>process "killed off" and it's the presence of the yeasts that seems to do the
>trick.
>Steve.
>
>Steve Mills
>Bath
>UK
>
Richard Harris on tue 28 oct 97
> About a month ago I took a recipe off Clayart for Spooze - a type of
slip
> mixture for attaching handles, etc.
> Just mix equal parts of - finely crushed dry clay
> - vinegar
> - cornsyrup
re. spooze
i have found that a colored slip will not adhere to the area where
spooze is, i suppose the syrup makes it too hard to absorb the moisture
from the additional colored slip and it crawls off.
michelle, in sunny (but chilly) saskatchewan
Steve Mills on wed 29 oct 97
Hi Suzanne,
Here in the UK we get organic vinagar at wholefood stores, or altrnatively
buy a gallon of cheap cider and leave the lid off, after a few days it will
be vinagar. I leave it for about a week then filter it through a coffee
filter, then I can use it for culinary or ceramic purposes, yum!
Steve
in
Bath
UK
home of magnificent marinades!!!
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