[Clayart] Calcined Rutile

William Schran wschran at cox.net
Sat Oct 29 09:00:08 EDT 2016

When you see dark & light rutile listed for sale, the light version has
been calcined.
Light, or sometimes called ³ceramic² rutile is better as gasses from
decomposition have burned off which can cause pin holing.


Bill Schran
wschran at cox.net

On 10/28/16, 9:47 PM, "Clayart on behalf of David Hendley"
<clayart-bounces at lists.clayartworld.com on behalf of david at farmpots.com>

>I have never heard of anyone calcining rutile.
>Pinholing can be a problem with rutile above 5 or 6%.
>But, it is equally a problem with titanium dioxide used
>in these percentages.
>Therefore, logically, I have always considered that titanium
>is the cause of the tendency to pinhole, not the organic
>matter in the rutile.
>David Hendley
>david at farmpots.com
>----- Original Message -----
>> Anyone have luck calcining their own rutile? What cone did you find was
>> best? I am getting a small bit of pinholing with one of my glazes.
>> -- 
>> Randall in Atlanta
>> http://wrandallmoody.com

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