Redart Fritware #1
|
Code # L3724N |
Location BOX42 |
| Materials | Amt | Units | |
|---|---|---|---|
| Redart | 15.000 | 50BG | 75.00% |
| National Standard Bentonite | 1.000 | 50BG | 5.00% |
| Ferro Frit 3110 | 50.000 | LB | 5.00% |
| Silica | 3.000 | 50BG | 15.00% |
Total:453,592.40 (R)
Notes
Try to increase thermal expansion. Initially targetting 4% porosity at cone 03.
Very slick, dewaters slowly. But not plastic enough for throwing (although I can pull very thin and tall pieces it is susceptible to splitting at the rim of pulled too hard).
Redart is non-plastic. The percentage of bentonite can be adjusted to dial the amount of plasticity needed.
Pictures
3724P an 3724N
Testdata
SHAB - Shrinkage/Absorption
| DLEN | FLEN | FWT | BWT | CONE | DSHR | FSHR | ABS | |
| 4 | 93.63 | 86.9 | 37.75 | 38.41 | 1.2 | 6.4% | 7.2% | 1.7% |
| 5 | 93.69 | 87.15 | 37.6 | 37.67 | -1.3 | 6.3% | 7.0% | 0.2% |
| 3 | 93.6 | 88.02 | 37.42 | 39.11 | -2.1 | 6.4% | 6.0% | 4.5% |
| 2 | 93.46 | 88.84 | 37.23 | 39.29 | -3.3 | 6.5% | 4.9% | 5.5% |
| 1 | 93.38 | 89.22 | 37.68 | 40.15 | -3.8 | 6.6% | 4.5% | 6.6% |
LDW - LOI/Density/Water Content
| WWGT | DWGT | FWGT | H2O | LOI | DENS | |
| 1 | 20.76 | 16.25 | 15.38 | 21.7% | 5.4% |
XML (to paste into Insight)
<?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="Redart Fritware #1" id="90596" key="g7gtZJ4o" date="2026-03-16" codenum="L3724N" location="BOX42"> <recipelines> <recipeline material="Redart" amount="15.000" tolerance="" unitabbr="50BG"/> <recipeline material="National Standard Bentonite" amount="1.000" tolerance="" unitabbr="50BG"/> <recipeline material="Ferro Frit 3110" amount="50.000" tolerance="" unitabbr="LB"/> <recipeline material="Silica" amount="3.000" unitabbr="50BG"/> </recipelines> </recipe> </recipes>
Born: 2015-01-28, Modified: 2026-03-16 14:12:11
Redart Fritware #2
|
Code # L3724P |
Location BOX42 |
| Materials | Amt | Units | |
|---|---|---|---|
| Redart | 14.000 | 50BG | 70.00% |
| National Standard Bentonite | 1.500 | 50BG | 7.50% |
| Ferro Frit 3110 | 75.000 | LB | 7.50% |
| Silica | 3.000 | 50BG | 15.00% |
Total:453,592.60 (R)
Notes
This adds 2.5% bentonite to L3724N.
Dry strength is very good.
Cone 04: Spectrum Clear shivered on this. Amaco clear not shivering.
Pictures
3724P an 3724N
Testdata
SHAB - Shrinkage/Absorption
| DLEN | FLEN | FWT | BWT | CONE | DSHR | FSHR | ABS | |
| 4 | 92.5 | 85.09 | 37.56 | 37.65 | -1.3 | 7.5% | 8.0% | 0.2% |
| 5 | 92.4 | 85.09 | 37.94 | 38.03 | -1.3 | 7.6% | 7.9% | 0.2% |
| 3 | 92.49 | 85.84 | 37.6 | 38.23 | -2.1 | 7.5% | 7.2% | 1.7% |
| 2 | 92.73 | 87.02 | 36.8 | 38.26 | -3.3 | 7.3% | 6.2% | 4.0% |
| 6 | 92 | 86.81 | 36.07 | 37.58 | -3.8 | 8.0% | 5.6% | 4.2% |
SOLU - Soluble Salts
| FIRE | |
| 1 | vlight |
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="Redart Fritware #2" id="90615" key="Ksn56iYW" date="2026-03-16" codenum="L3724P" location="BOX42"> <recipelines> <recipeline material="Redart" amount="14.000" tolerance="" unitabbr="50BG"/> <recipeline material="National Standard Bentonite" amount="1.500" tolerance="" unitabbr="50BG"/> <recipeline material="Ferro Frit 3110" amount="75.000" tolerance="" unitabbr="LB"/> <recipeline material="Silica" amount="3.000" tolerance="" unitabbr="50BG"/> </recipelines> </recipe> </recipes>
Born: 2015-01-28, Modified: 2026-03-16 14:12:33
Redart Fritware #4
|
Code # L3724M1 |
Location BOX42 |
| Materials | Amt | Units | |
|---|---|---|---|
| Redart | 15.000 | 50BG | 73.53% |
| M23 Ball Clay | 4.000 | 50BG | 19.61% |
| Ferro Frit 3110 | 50.000 | LB | 4.90% |
| Bentonite | 20.000 | LB | 1.96% |
Total:462,664.40 (R)
Notes
Using ball clay to but the bentonite percentage.
Plasticity is excellent.
This is really strong and hard at cone 1.
Pictures
G3826 on M1 and M2 - cone 04
G3826 on L3724M1 and L3724M2
Not clear why this is happening.
M1 (left) M2 (right) with Spectrum Clear at cone 03
Result is very good. Pieces were bisque fired.
XML (to paste into Insight)
<?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="Redart Fritware #4" id="91037" key="NdcX4iM3" date="2026-03-16" codenum="L3724M1" location="BOX42"> <recipelines> <recipeline material="Redart" amount="15.000" tolerance="" unitabbr="50BG"/> <recipeline material="M23 Ball Clay" amount="4.000" tolerance="" unitabbr="50BG"/> <recipeline material="Ferro Frit 3110" amount="50.000" tolerance="" unitabbr="LB"/> <recipeline material="Bentonite" amount="20.000" unitabbr="LB"/> </recipelines> </recipe> </recipes>
Born: 2015-01-28, Modified: 2026-03-16 14:12:44
Redart Fritware #5
|
Code # L3724M2 |
| Materials | Amt | Units | |
|---|---|---|---|
| Redart | 15.000 | 50BG | 73.53% |
| Tile #6 Kaolin | 4.000 | 50BG | 19.61% |
| Ferro Frit 3110 | 50.000 | LB | 4.90% |
| Bentonite | 20.000 | LB | 1.96% |
Total:462,664.40 (R)
Notes
Plasticity OK, but not as good as with ball clay (L3724M1). Increase bentonite if needed.
Pictures
M1 (left) M2 (right) with Spectrum Clear at cone 03
Result is very good. Pieces were bisque fired.
G3826 on M1 and M2 - cone 04
G3826 on L3724M1 and L3724M2
Not clear why this is happening.
XML (to paste into Insight)
<?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="Redart Fritware #5" id="91100" key="ihLzYEGQ" date="2026-03-16" codenum="L3724M2"> <recipelines> <recipeline material="Redart" amount="15.000" tolerance="" unitabbr="50BG"/> <recipeline material="Tile #6 Kaolin" amount="4.000" tolerance="" unitabbr="50BG"/> <recipeline material="Ferro Frit 3110" amount="50.000" tolerance="" unitabbr="LB"/> <recipeline material="Bentonite" amount="20.000" tolerance="" unitabbr="LB"/> </recipelines> </recipe> </recipes>
Born: 2015-01-28, Modified: 2026-03-16 14:12:51
Redart Tile Body
|
Code # L4237 |
| Materials | Amt |
|---|---|
| Redart | 80.000 |
| M23 Ball Clay | 20.000 |
Total:100.00
Auto Unity Formula
|
Si:Al: 6.0:1 5.9 (Molar:5.1) 5.8 Cost 0.29 per kg |
Notes
This recipe is an effort to produce a tile body that will mature at the lowest possible temperature. I am employing RedArt, a readily available, highly processed terracotta clay that vitrifies about cone 2. However it has low plasticity, so I have added ball clay (that will raise the firing temperature).
By cone six this fires incredibly vitreous, zero porosity. Yet a 12" square tile fired flat!
Pictures
Tiles: L4115J with L3954B engobe, L4237 red body
Cone 6 PLDSSC firing schedule.
L4115J is curling because of the engobe
L4237 fired perfectly flat, even though it is highly vitreous, likely zero porosity.
L4237 tile with Polar Ice laminiate at cone 6
12 inch tile fired fairly flat. But this body is too vitreous for tile.
It curls at cone 2, must straighten back out by cone 6.
Polar Ice layer has cracking pattern on large tile.
L4237 with Polar Ice engobe curls at cone 2
L4237 fired bars
Typecodes
C6-Crawl Cone 6
Testdata
SHAB - Shrinkage/Absorption
| DLEN | FLEN | FWT | BWT | CONE | DSHR | FSHR | ABS | |
| 1 | 93.74 | 87.94 | 38.25 | 38.25 | 7.0 | 6.3% | 6.2% | 0.0% |
| 6 | 93.64 | 87.62 | 39.94 | 39.95 | 6.0 | 6.4% | 6.4% | 0.0% |
| 5 | 93.65 | 87.53 | 39.5 | 39.51 | 5.0 | 6.3% | 6.5% | 0.0% |
| 4 | 93.68 | 87.91 | 39.23 | 39.49 | 4.0 | 6.3% | 6.2% | 0.7% |
| 3 | 93.68 | 88.43 | 39 | 40.28 | 2.7 | 6.3% | 5.6% | 3.3% |
| 2 | 93.58 | 88.42 | 39.61 | 41 | 2.0 | 6.4% | 5.5% | 3.5% |
XML (to paste into Insight)
<?xml version="1.0"?> <recipes version="1.0" encoding="UTF-8"> <recipe name="Redart Tile Body" id="166170" key="2cNa974t" date="2019-12-20" typecodes="C6" codenum="L4237" picturebasename=""> <recipelines> <recipeline material="Redart" amount="80.000" tolerance=""/> <recipeline material="M23 Ball Clay" amount="20.000" tolerance=""/> </recipelines> </recipe> </recipes>
Born: 2014-03-21, Modified: 2019-12-20 15:17:02
