Daniel Semler on tue 22 mar 05
Hi All,
This is the porcelain I most often use and the results here are very
interesting, at least to me. The methods used were the same as I used for Pier
porcelain. I'll discuss method in another post.
Shrinkage :
Again 3 sticks with 100mm lines on each.
Bone dry the avg length : 93.75 mm
Bisqued the avg length : 93.5 mm
cone 10 oxidation avg. length : 87.83 mm
That's 12.16 % shrinkage at cone 10.
Absorption :
Test piece Absorption
A 2.27%
B 2.21%
C 2.13%
The average absorption being 2.21%. Note, numerical discrepancies are due to
rounding errors.
The absorption value here suggests that we could go higher with this
porcelain. It was a good cone 10 with tip almost touching and 11 starting to
bend. I have seen this body fired to cone 12 and a half. At those sorts of
temps it does go translucent. If you're lucky it will pick up killer ash and
flame effects too.
Thanx
D
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