New Foundry Hill Creme
|
Code # L3146B |
| Materials | Amt |
|---|---|
| New Foundry Hill Creme | 100.000 |
Total:100.00
Notes
Foundry Hill Creme is used as a major ingredient in making stoneware clay bodies. It is similar to a ball clay but having a much lower drying shrinkage (about 6-6.5%) and more iron (but a distinctly low TiO2). Strangely, although this is a fairly refractory clay, it has a high firing shrinkage, around 8% across the entire range from cone 7 to 11. Porosity drops slowly from cone 7 upward (7% down to 4% at cone 11 oxidation and 10 reduction). Used commonly in stoneware clay bodies.
Pictures
Reduction fired DFAC disks
Foundry Hill Creme Test bars
Testdata
SHAB - Shrinkage/Absorption
| DLEN | FLEN | FWT | BWT | CONE | DSHR | FSHR | ABS | |
| 12 | 93.9 | 86.48 | 36.05 | 37.19 | 10.5R | 6.1% | 7.9% | 3.2% |
| 10 | 93.17 | 86.61 | 36.7 | 38.28 | 10.0 | 6.8% | 7.0% | 4.3% |
| 9 | 93.66 | 86.91 | 35.88 | 37.87 | 9.0 | 6.3% | 7.2% | 5.5% |
| 8 | 93.8 | 87.34 | 35.24 | 37.54 | 8.0 | 6.2% | 6.9% | 6.5% |
| 7 | 93.81 | 87.60 | 35.56 | 38.13 | 7.0 | 6.2% | 6.6% | 7.2% |
| 6 | 93.74 | 87.68 | 36.45 | 39.37 | 6.0 | 6.3% | 6.5% | 8.0% |
| 5 | 93.49 | 87.83 | 36.31 | 39.74 | 5.0 | 6.5% | 6.1% | 9.4% |
| 4 | 93.83 | 88.65 | 35.53 | 39.51 | 4.0 | 6.2% | 5.5% | 11.2% |
SOLU - Soluble Salts
| FIRE | |
| 5 | strange |
DFAC - Drying Factor
| DFAC | SOLD | |
| 1 | A000 | nil |
XML (to paste into Insight)
<?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="New Foundry Hill Creme" id="202959" key="qDMfSmxh" date="2022-04-22" codenum="L3146B"> <recipelines> <recipeline material="New Foundry Hill Creme" amount="100.000" tolerance=""/> </recipelines> </recipe> </recipes>
Born: 2021-08-18, Modified: 2022-04-22 11:33:23
Foundry Hill Creme+Nepheline
|
Code # L3146A |
| Materials | Amt |
|---|---|
| New Foundry Hill Creme | 65.000 |
| Nepheline Syenite | 35.000 |
Total:100.00
Notes
This simple two part mix produces a plastic and vitreous cone 6 stoneware. Since the FHC already contains plenty of silica, no silica needs to be added in the recipe.
This reaches zero porosity, and thus maximum density and strength, right at cone 6. It is a good body to evaluate the effect of mineral additions, their effect on the maturity will be evident.
Pictures
Left: KT1-4:NS 65:35, Right: Foundary Hill Creme
Cone 6 with G2926B
L3146A fired bars - Cone 8 down to 1
Testdata
SHAB - Shrinkage/Absorption
| DLEN | FLEN | FWT | BWT | CONE | DSHR | FSHR | ABS | |
| 8 | 93.36 | 84.92 | 35.54 | 35.54 | 8.0 | 6.6% | 9.0% | 0.0% |
| 7 | 93.33 | 84.91 | 36.48 | 36.48 | 7.0 | 6.7% | 9.0% | 0.0% |
| 6 | 93.23 | 85.11 | 35.37 | 35.4 | 6.0 | 6.8% | 8.7% | 0.1% |
| 5 | 93.39 | 85.38 | 35.79 | 36.28 | 5.0 | 6.6% | 8.6% | 1.4% |
| 4 | 93.22 | 85.78 | 37.03 | 38.28 | 4.0 | 6.8% | 8.0% | 3.4% |
| 3 | 93.2 | 85.94 | 37 | 38.64 | 3.0 | 6.8% | 7.8% | 4.4% |
| 2 | 93.33 | 86.37 | 36.79 | 38.56 | 2.0 | 6.7% | 7.5% | 4.8% |
| 1 | 93.61 | 86.73 | 34.88 | 36.65 | 1.0 | 6.4% | 7.3% | 5.1% |
SOLU - Soluble Salts
| FIRE | |
| 1 | light |
DFAC - Drying Factor
| DFAC | SOLD | |
| 1 | C110 | light |
XML (to paste into Insight)
<?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="Foundry Hill Creme+Nepheline" id="202879" key="ZY6TRzrm" date="2022-04-22" codenum="L3146A"> <recipelines> <recipeline material="New Foundry Hill Creme" amount="65.000" tolerance=""/> <recipeline material="Nepheline Syenite" amount="35.000" tolerance=""/> </recipelines> </recipe> </recipes>
Born: 2021-08-18, Modified: 2022-04-22 11:35:33
FHC + Pyrax
|
Code # L3146D |
| Materials | Amt | |
|---|---|---|
| Foundry Hill Creme | 65.000 | 56.52% |
| Nepheline Syenite | 35.000 | 30.43% |
| Pyrax | 15.000 | 13.04% |
Total:115.00
Notes
It is not completely clear to me why someone would add pyrax to this type of Porcelain. 20% silica is needed to increase the thermal expansion so that glazes a fit. If part of that is replaced with low expansion pyrax than glazes are not going to fit. What would be the point of that?
Plasticity is much more reduced by this than with the Kyanite addition (likely because of the much greater particle surface area of Pyrax).
This is splitting at rim when throwing on the potters wheel, is it flabby. That being said, it is still possible to pull it up to make thin walled pieces.
Pictures
L4146C and L3146D from cone 3 and 10
Kyanite is actually making this bloat. And speck.
L3146C, L2146D at cone 6
G2926B glaze inside, G2934 glaze outside.
L3146c, L3146D with 2926B clear, purple
These a very thin clay slices.
None have curled during firing, indicating neither crazing nor crawling.
Testdata
SHAB - Shrinkage/Absorption
| DLEN | FLEN | FWT | BWT | CONE | DSHR | FSHR | ABS | |
| 10 | 94.32 | 87.82 | bloating | 10 | 5.7% | 6.9% | ||
| 9 | 94.17 | 86.83 | blaoting | 9.0 | 5.8% | 7.8% | ||
| 8 | 94.31 | 86.84 | 37.87 | 37.89 | 8.0 | 5.7% | 7.9% | 0.1% |
| 7 | 94.38 | 86.89 | 38.69 | 38.73 | 7.0 | 5.6% | 7.9% | 0.1% |
| 6 | 94.28 | 86.68 | 36.96 | 36.98 | 6.0 | 5.7% | 8.1% | 0.1% |
| 5 | 94.68 | 86.89 | 37.69 | 38.37 | 5.0 | 5.3% | 8.2% | 1.8% |
| 4 | 94.16 | 86.90 | 35.93 | 36.89 | 4.0+ | 5.8% | 7.7% | 2.7% |
| 3 | 94.34 | 88.1 | 36.3 | 37.93 | 3.0 | 5.7% | 6.6% | 4.5% |
SOLU - Soluble Salts
| FIRE | |
| 1 | nil |
DFAC - Drying Factor
| DFAC | SOLD | |
| 1 | A000 | light |
XML (to paste into Insight)
<?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="FHC + Pyrax" id="210091" key="mNkijgrG" date="2022-05-28" codenum="L3146D"> <recipelines> <recipeline material="Foundry Hill Creme" amount="65.000" tolerance=""/> <recipeline material="Nepheline Syenite" amount="35.000" tolerance=""/> <recipeline material="Pyrax" amount="15.000" tolerance=""/> </recipelines> </recipe> </recipes>
Born: 2021-12-17, Modified: 2022-05-28 21:09:59
FHC + Kyanite
|
Code # L3146C |
| Materials | Amt | |
|---|---|---|
| Foundry Hill Creme | 65.000 | 56.52% |
| Nepheline Syenite | 35.000 | 30.43% |
| Kyanite | 15.000 | 13.04% |
Total:115.00
Auto Unity Formula
|
Si:Al: 3.8:1 6.3 (Molar:5.9) 4.9 |
Notes
The kyanite addition has impacted plasticity somewhat, it is a little more difficult to throw than the base 65:35 recipe and the piece wants to twist a little more at the base when walls are thin. However, even though kyanite is a gritty material the texture felt on throwing this is minimal. This addition has less impact on plasticity than the pyrax.
Pictures
L4146C and L3146D from cone 3 and 10
Kyanite is actually making this bloat. And speck.
L3146C, L2146D at cone 6
G2926B glaze inside, G2934 glaze outside.
L3146c, L3146D with 2926B clear, purple
These a very thin clay slices.
None have curled during firing, indicating neither crazing nor crawling.
Testdata
SHAB - Shrinkage/Absorption
| DLEN | FLEN | FWT | BWT | CONE | DSHR | FSHR | ABS | |
| 10 | 94.83 | 89.32 | bloating | 10 | 5.2% | 5.8% | ||
| 9 | 94.82 | 88.45 | 9.0 | 5.2% | 6.7% | |||
| 8 | 94.52 | 88.22 | 41.45 | 41.46 | 8.0 | 5.5% | 6.7% | 0.0% |
| 7 | 94.65 | 87.88 | 41.52 | 41.53 | 7.0 | 5.3% | 7.2% | 0.0% |
| 6 | 94.3 | 87.61 | 41.91 | 41.93 | 6.0 | 5.7% | 7.1% | 0.0% |
| 5 | 94.3 | 87.55 | 40.58 | 40.97 | 5.0 | 5.7% | 7.2% | 1.0% |
| 4 | 94.1 | 87.21 | 37.49 | 38.14 | 4.0+ | 5.9% | 7.3% | 1.7% |
| 3 | 94.81 | 88.99 | 38.36 | 39.65 | 3.0 | 5.2% | 6.1% | 3.4% |
SOLU - Soluble Salts
| FIRE | |
| 1 | nil |
DFAC - Drying Factor
| DFAC | SOLD | |
| 1 | A000 | light |
XML (to paste into Insight)
<?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="FHC + Kyanite" id="212417" key="BZBmSPCn" date="2022-05-07" codenum="L3146C"> <recipelines> <recipeline material="Foundry Hill Creme" amount="65.000" tolerance=""/> <recipeline material="Nepheline Syenite" amount="35.000" tolerance=""/> <recipeline material="Kyanite" amount="15.000" tolerance=""/> </recipelines> </recipe> </recipes>
Born: 2022-02-09, Modified: 2022-05-07 16:20:42
