Carolynn Palmer on wed 30 jun 99
In a message dated 6/29/99 01:33:39 PM, you wrote:
>Epsom Salts (MgSO4). If you have an option, choose MgSO4.
My experience with Epsom Salts in my heavily fritted glaze was that it caused
it to froth unbelievably when mixed with my Jiffy Mixer - this bubbly froth
even stayed on the top of glaze bucket for days, and when a pot was dipped
through it, it caused the glaze to have a very rough uneven surface.
I haven't tried the muriatic acid yet, but I was hoping that it might be the
thickener (suspesion agent) that I have been searching for.
Carolynn Palmer, Somerset Center, Michigan
gambaru on thu 1 jul 99
I have not noticed this product mentioned for suspension problems. FLOCS, 4
oz., 4.50 cdn. from Tuckers. Use one teaspoon for 4 to 5 gallons of glaze.
More difficult glazes use a bit more.
I had one glaze that sunk and needed complete stirring between pots, used
above and one usual stirring after sitting for weeks and it is useable
without constant re-stirring.
Clear liquid, no odour,no clue as to what is in it, suspect some sodium
silicate as the droplets on outside of jar becoming a bit sticky as they
dry.
MB
-----Original Message-----
From: Carolynn Palmer
To: CLAYART@LSV.UKY.EDU
Date: Wednesday, June 30, 1999 8:29 AM
Subject: Epsom Salts/heavily fritted glaze
>----------------------------Original message----------------------------
>
>In a message dated 6/29/99 01:33:39 PM, you wrote:
>
>>Epsom Salts (MgSO4). If you have an option, choose MgSO4.
>
>
>My experience with Epsom Salts in my heavily fritted glaze was that it
caused
>it to froth unbelievably when mixed with my Jiffy Mixer - this bubbly froth
>even stayed on the top of glaze bucket for days, and when a pot was dipped
>through it, it caused the glaze to have a very rough uneven surface.
>
>I haven't tried the muriatic acid yet, but I was hoping that it might be
the
>thickener (suspesion agent) that I have been searching for.
>
>Carolynn Palmer, Somerset Center, Michigan
>
Craig Martell on thu 1 jul 99
Hi:
A couple of products that you might try are: Vee Gum t, or Vee Gum Pro.
Vee Gum Pro is a very fine grained montmorillonitic clay like bentonite but
fires very white and has some cmc gum added. Vee Gum T is the same stuff
without the cmc. Another good suspender is Hecta Brite, which is basically
hectorite ore, another montmorillonite. Macaloid is also produced from
hectorite ore and works much the same. It usually takes somewhere around 3%
to suspend a mixture that contains little or no clay. You can also add
epsom salts to help by making a saturated solution and adding this stuff to
the mix that already contains vee gum or something else. Use an eyedropper
and add a drop or two at a time until you get a good "set" to the mixture.
Saturated epsom solutions are made by adding epsom salts to water until no
more will dissolve. Be careful with the epsom addition because too much can
really make an annoying gel out of the glaze. Also, don't add the epsom
salts before you blunge with the jiffy mixer and you won't have a foam
problem. You'll be adding liquid to liquid so it's not important to jiffy
mix the epsom salts into the glaze.
later, Craig Martell in Oregon
Thonas C. Curran on fri 2 jul 99
Try making up your glaze batch and adding epsom salts after the mixing
with the Jiffy mixer. I can't remember what happens with heavily
fritted glazes, but I haven't had too much problem with frothing when I
add the epsom salts afterwards. (It dissolves readily in the batch.)
Carolyn in soggy upstate NY
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