Russel Fouts on wed 22 sep 99
I need to concentrate some terra-sig. I know I could boil it down but that
never seems to work very well and the stove I'd do it on isn't mine. I've
tried Vince's method which works well but is a lot of work when we're
talking about 70 Litres.
I've read that you can force it to settle out by adding vinegar or wine or
salt. Starting with a 1.5 litre sample of sig, I added first a few drops of
vinegar, then waited about 12 hours but saw no evidence of settling at all.
In the end I added quite a lot of vinegar to the 1.5 litre sample but still
saw no evidence of settling. A sample with salt (table salt)was the same.
Note, our water has a lot of calcium in it, could this be affecting it?
Keep in mind, the settling out that makes it terra-sig has already been done
(with about 7.5 ml Sodium Silicate to 1 litre of water). This works very
well, after a few hours you can see the layers of different particle sizes
building up. 24 hrs and it's done. I don't see any of this when trying to
reduce the Terra-Sig.
Russel
Russel Fouts
Mes Potes & Mes Pots
Brussels, Belgium
Tel: +32 2 223 02 75
Mobile: +32 476 55 38 75
Http://users.skynet.be/russel.fouts
http://www.Japan-Net.ne.jp/~iwcat
John Rodgers on thu 23 sep 99
Russel, if you already have the TS separated out from the rest of thje clay, and
it is ready to use, you can concentrate it by pouring into a plaster container
of some kind. A bowl mold is good. When enough water/moisture is removed from
the TS it will be more concentrated. Pour it up(scrape from the plaster if
necessary.) This speeds the process considerable. If to thick/viscous add back
sufficient water to make it fluid enough to use.
Good luck..
John Rodgers
In New Mexico
Russel Fouts wrote:
> ----------------------------Original message----------------------------
>
> I need to concentrate some terra-sig. I know I could boil it down but that
> never seems to work very well and the stove I'd do it on isn't mine. I've
> tried Vince's method which works well but is a lot of work when we're
> talking about 70 Litres.
>
> I've read that you can force it to settle out by adding vinegar or wine or
> salt. Starting with a 1.5 litre sample of sig, I added first a few drops of
> vinegar, then waited about 12 hours but saw no evidence of settling at all.
> In the end I added quite a lot of vinegar to the 1.5 litre sample but still
> saw no evidence of settling. A sample with salt (table salt)was the same.
>
> Note, our water has a lot of calcium in it, could this be affecting it?
>
> Keep in mind, the settling out that makes it terra-sig has already been done
> (with about 7.5 ml Sodium Silicate to 1 litre of water). This works very
> well, after a few hours you can see the layers of different particle sizes
> building up. 24 hrs and it's done. I don't see any of this when trying to
> reduce the Terra-Sig.
>
> Russel
>
> Russel Fouts
> Mes Potes & Mes Pots
> Brussels, Belgium
> Tel: +32 2 223 02 75
> Mobile: +32 476 55 38 75
> Http://users.skynet.be/russel.fouts
> http://www.Japan-Net.ne.jp/~iwcat
Tetsuya Shimano on thu 23 sep 99
Hi Russel,
I have never heard about the defloculation with vineger/wine/salt.
Defloculation is the chemical reaction that the bands of molecules are broken
down. so, the heavy particles go the bottom and the lighter particles go the
top. that's why you can see the settlimg. to defloculate the clay, you need
to add some of sodium silicate. i don't think that vineger/wine/salt have
sodium silicate. so it doesn't work for defloculation.
the calcium in the water might not be the big problem, but you should purify
the water.
hope, you can get good terra sigi.
t
Vince Pitelka on thu 23 sep 99
>I need to concentrate some terra-sig. I know I could boil it down but that
>never seems to work very well and the stove I'd do it on isn't mine. I've
>tried Vince's method which works well but is a lot of work when we're
>talking about 70 Litres.
Russel -
Yes, my method using natural evaporation implies that you can afford to set
the thin sig off to the side in a large evaporating dish and leave it alone
for a week or two. Works great if you have the time. I usually don't have
the time, so I put it in a large metal bowl and set it in an electric kiln
with the elements on low and the lid open, and the next morning it is
bone-dry. I then re-constitute it as I need it, but soaking the dry sig in
water and mixing up with a drill-mixer or hand-blender.
Any kind of large metal bowl, bucket, tub, or stockpot will work great, and
will be a HELL of a lot easier than boiling it on a stove. I can't imagine
doing that, because you would have to stir it constantly to keep from
burning the bottom of the pot.
I would not try forcing it to settle with salts, because you would end up
with a sig which would not stay in suspension, making it damn near
impossible to use.
Good luck -
- Vince
Vince Pitelka
Home - vpitelka@DeKalb.net
615/597-5376
Work - wpitelka@tntech.edu
615/597-6801 ext. 111, fax 615/597-6803
Appalachian Center for Crafts
Tennessee Technological University
1560 Craft Center Drive, Smithville TN 37166
Anji Henderson on thu 23 sep 99
I am no guru at all, but I did stop at "boiling" As, I
remember it needs to be lightly simmered... This may
be one problem..... I'm sure someone will see this and
correct and/or elaborate....
Anji
--- Russel Fouts wrote:
> ----------------------------Original
> message----------------------------
>
> I need to concentrate some terra-sig. I know I could
> boil it down but that
> never seems to work very well and the stove I'd do
> it on isn't mine. I've
> tried Vince's method which works well but is a lot
> of work when we're
> talking about 70 Litres.
>
> I've read that you can force it to settle out by
> adding vinegar or wine or
> salt. Starting with a 1.5 litre sample of sig, I
> added first a few drops of
> vinegar, then waited about 12 hours but saw no
> evidence of settling at all.
> In the end I added quite a lot of vinegar to the 1.5
> litre sample but still
> saw no evidence of settling. A sample with salt
> (table salt)was the same.
>
> Note, our water has a lot of calcium in it, could
> this be affecting it?
>
> Keep in mind, the settling out that makes it
> terra-sig has already been done
> (with about 7.5 ml Sodium Silicate to 1 litre of
> water). This works very
> well, after a few hours you can see the layers of
> different particle sizes
> building up. 24 hrs and it's done. I don't see any
> of this when trying to
> reduce the Terra-Sig.
>
> Russel
>
> Russel Fouts
> Mes Potes & Mes Pots
> Brussels, Belgium
> Tel: +32 2 223 02 75
> Mobile: +32 476 55 38 75
> Http://users.skynet.be/russel.fouts
> http://www.Japan-Net.ne.jp/~iwcat
>
=====
Anji
http://www.angelfire.com/md/Anji/
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