Sounds like a porcelain grog is in the clay.
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Posted by Ben on 03 March 2015 - 03:00 PM
Posted by Ben on 15 August 2013 - 07:53 PM
You know Mart,
You will get more flies with honey....
And you'll be more likely to get someone to follow your top quoting preferences if you reword your instructions.
I find your remark "extremely" objectionable and annoyingly off topic.
You added nothing to solving the problem at hand as this is not an internet ettiquette discussion forum nor topic.
Looks like "Eeny, meeny, miny, moe" wil give the final answer to a young kiln builder
BTW, it is EXTREMELY annoying when you "top quote"
Posted by Ben on 12 July 2013 - 11:15 AM
You are talking about a viscosity cup and as mentioned, viscosity and specific gravity are different and independent. You must regulate both to control how a glaze applies.
Specific gravity is most accurately measured using a gram scale. Balance the scale with an empty, dry 100ml or 1000ml graduated cylinder on it. These are available online for very little money.
Fill with well mixed glaze to either 100 ml or 1000ml and weigh. Water weighs 100 grams per 100ml. If the sample in the 100ml test weighs 127 grams the smaple has a specific gravity of 1.27.
The viscosity of the glaze can be affected by numerous factors and is measured by dipping the cup in and timing the time it takes to drain.
How to adjust viscosity will be determined by the ingredients in the glaze.
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