Glaze Problem

[Guest]

Any thoughts as to what I may have done to cause this defect?

I used an immersion blender to mix the glaze, sieved to 85 mesh the next day then used the blender again. Next I stirred the pot before dipping each soup mug into the bucket and I see this on all 8 of the mugs.  I dipped upside down into the bucket and held in the air long enough to prevent runs and catch the drips.

so I'm guessing its not a drip.

^6 stoneware

[glazenerd]

Titanium.

[Guest]

TiO2 = 0.08% plus what's in Mason 6464 (1.5% total stain in recipe)

 

[Min]

For what it's worth I wouldn't call it a defect, it's what titania does. If you don't like it then have you tried the recipe without it?

(6464 is zirconia and vanadium btw)

[glazenerd]

And upwards of 1.5% in the stoneware clay.  Could be something else bleeding at the glaze break line, but looks like TiO2 from here. Crystalline glaze is notorious for titanium bleed, certainly reminds me of it. Maybe it's Dark Vader rutile, Joel spoke of. Sorry, making light of it. 

[neilestrick]

Yep, a thick spot/drip with titanium. It's little things like that which make each pot unique and special. Embrace it.

[glazenerd]

Ron: top half is glazed with crystalline, bottom half is clear glaze ( over black porcelain. The white  is pure titanium bleed. So you can develop your effect if you so choose. Notice I did not say defect, but rather effect.

[Mark C.]

1 hour ago, neilestrick said:

Yep, a thick spot/drip with titanium. It's little things like that which make each pot unique and special. Embrace it.

Yes-part of the deal that makes glazes look special.

[Guest]

Titanium it is then.

I'm happy to hear its called  "Added Character" and not a "defect" Made my day.

Thanks All