[Clayart] Replacing bentonite

[Mary Winter]

Jeremy you can get 5 pounds of bentonite from US Pigment for $10. You might
consider this.

Mary

On Tue, Aug 20, 2024 at 8:26 PM David Woof via Clayart <
clayart at lists.clayartforum.com> wrote:

> Hi Jeremy,
> You asked for a replacement for Bentonite.  Perhaps we assumed you knew
> the mineral qualities of the materials you have available to know you could
> not just whip up a batch of what Bentonite could be replaced with.  So our
> answers asked you to discern that there is no simple one material
> substitute.
> Macaloid and Bentonites are unique materials that cannot be substituted
> singly or in combinations of raw materials you would likely have.  This
> also requires understanding the intrinsic characters of each mineral and
> the combination effects involved.
>
> We could have no doubt wasted your time telling you to take a high
> plasticity synthesized Ball clay, reduce the original recipe amounts of
> feldspar and silica and adjust the recipe ratios to accommodate these
> additions back to the original Empirical.
>
> Then add enough CMC gum as a physical "mechanical" suspender, adequate
> Hopefulness, and Sodium Silicate to deflocculate the glaze slop.    Then if
> you've worked the Math correctly to arrive at a workable materials ratio...
> you would still have to learn how to apply a deflocculated glaze slop
> because the slop rheology will be way off of what most potters who use
> flocculated glaze slops are familiar with.
> And no doubt you would lose the Kuan Crackle glaze effect because you have
> created a new Glaze. which might be an attractive glaze but not Kuan you'd
> hoped for.
> So If I gave you the adjusted amounts for this substitution most likely
> the results wouldn't please.
>
> ********So back to Bentonite or Macaloid.
>
> Misneach,
>
> David
> Woof.....................................................................................................................................................................
>
> ****************************************************************************************************.
> ________________________________
> From: Clayart <clayart-bounces at lists.clayartforum.com> on behalf of
> Jeremy Keala Ceramics via Clayart <clayart at lists.clayartforum.com>
> Sent: Friday, August 16, 2024 10:17 AM
> To: clayart at lists.clayartforum.com <clayart at lists.clayartforum.com>
> Cc: Jeremy Keala Ceramics <jeremy.keala.ceramics at gmail.com>
> Subject: [Clayart] Replacing bentonite
>
> Hello,
>
> I’m starting to work on creating a Kuan crackle glaze. My starting recipes
> have bentonite in them and I don’t currently don’t have bentonite in my
> workshop and would like to keep it that way otherwise I just keep adding
> new materials all the time to my list of raw materials.
> Would you have any suggestions how to go about replacing bentonite in a
> glaze ?
> Thanks and all the best,
> Jeremy
>
>
> --
> *Jeremy Keala Ceramics*
> www.jeremykeala.com<http://www.jeremykeala.com>
> Instagram : @jeremy_keala_ceramics
> <https://www.instagram.com/jeremy_keala_ceramics/>
> +33 (0)6 59 96 92 54
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