Extra Tile Setter Legs: 1" x 3/4" x 1/2"

In stock
SKU
C-177-0
Extra legs for the High Alumina Tile Setters can be placed on either side making the gap between the setters 3/4" or... Read More
Our Price $1.10
More Information
SKU C-177-0
Material Dry-Pressed High Alumina
Firing Temperature Max. Cone 10
Usage Restrictions Info See 'Tips/Safety'
Dimensions (in.) 1 x 3/4 x 1/2
Actual Weight (lbs) .02
Shipping weight .12
Drop Ship No
Ships in Own Box No
Free Freight No
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Cautions & Guidelines for High Alumina Shelves

  • Do not fast fire or crash cool: rapid temperature changes may cause cracking.
  • Not for use in Raku.
  • Not for use in wood kilns. Wood ash attacks the shelf material causing delamination.
  • Not for use in soda kilns. 
  • 3-Post shelves only. 3-Posts provide the most stable support for the shelf. More than 3 posts will cause the shelf to rock and shift as it expands and contracts during firing. This creates stress that can crack the shelf.
  • Rotate shelves between firings. If firing to Cone 8-10 it is recommended that you ‘rotate’ your shelves. To properly rotate a shelf it must be turned over and placed so that the kiln posts touch the shelf in the same places that they did on the opposite side. This fully reverses the stresses in the shelf to maintain flatness.
  • Use kiln wash. This material is the most porous of all the shelves we carry and glaze will soak into an unprotected shelf. The commercial wash we carry (C-175-164) is suitable for High Alumina shelves but it does contain silica which causes it to adhere to the shelf. It can be difficult to remove if you are rotating your shelves. An alternative wash is a combination of Alumina Hydrate and EPK Kaolin The proportions vary depending on your preferences. Start with the following formula:
    • 70% Alumina Hydrate
    • 30% EPK Kaolin

Mix to your preferred consistency. Thicker wash will absorb more glaze drips while a thinner wash can be used to prevent the feet of vitreous clays from sticking to the shelf.

You can also adjust the proportions of Alumina Hydrate and EPK to better suit your needs:

The higher the % of EPK the better the glaze absorption will be, but the more the wash will adhere to the shelf. This type of wash will be more difficult to clean off in order to rotate the shelf.

The higher the % of Alumina Hydrate the less the wash will protect against glaze drips but it will still prevent vitreous clay from sticking. This type of wash is easier to clean off to rotate the shelf.

You will have to experiment to find the best combination for your application.

NOTE: There is no warranty on refractories. Other than shipping damages, no claims can be made.

 

 

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