Austin Product Links for Linda's Pate de Verre Class

Modeling Clay & Casting Plaster @ Armadillo Clay

Longhorn White Clay, NO GROG: Found at Armadillo Clay in Austin (click for directions).  As of March 2017, 25 lbs is $15.50, and 50 lbs is $26.25. Be sure it has "no grog" because the type with grog won't work for making a smooth model.

Clay Tools: There are nice clay tools available at Armadillo, including some silicone smoothers.

Plaster and Silica Flour: Found at Armadillo Clay in Austin. Here's a link to the pricing.

  • USG#1 Plaster – $19.67 for 25 lbs.
  • Silica Flour ("Silica 200" at Armadillo) – $15.73 for 50 lbs.

Tools for Weighing Plaster, Powder, & Frit

Here is a link to the scale that we used for weighing plaster on Amazon. This one is nice because it can get wet and is still easy to clean. It is not precise enough to measure frit.

The small scale used for measuring colored powders and frit was from Harbor Freight. If you don't see them, ask the clerk. They are sometimes kept behind the counter because they are frequently used for measuring drugs. 

Sample Trays

Brick in the Yard Mold Supply is the supplier for the brownish rubber we used to make samples with the ice cube trays. They occasionally have online coupons.

Verify the type of polyurethane in your notes...I think it's Poly 74-30.  The polyurethane is weighed 50/50 BY WEIGHT. There is also a PolyTek Pol-Ease release product available.

HEB carries a nice "Easy Release" ice cube tray that's shallow and doesn't use a lot of polyurethane. Build up the edge of the tray with water-based clay and fill with polyurethane. Leave overnight, then cut in half. Build a mold box out of a rigid plastic or glass and duct tape.

Linda's trays took approximately 350g water and 700g 50/50 mix, and are one-time use. This is just a starting place...yours will most likely vary.

If you would like to make a reusable mold box, use Castalot instead of 50/50. However, it MUST be kilnwashed before each use.

For regular colors, you can use a mold box with eight wells. If you are using dark colors, then make trays with twelve wells. Scratch the numbers and letters into the side of the mold with a pencil. The "01" row is for mixtures with fine frit, and the "08" row is for mixtures made entirely of powder.

Use a fine-point Brite-Mark paint marker to mark the side of your samples after they are fired. The color number is in the first position (in this case transparent Spring Green), then the type of clear base (8 for "powder" and 1 for "fine frit"), then a letter corresponding to the proportions by weight (A=50% color, B=25% color, C=10% color, D=5% color, E=3% color, F=1% color).

Finishing the Glass

Diamond Grinding Bits:  Lasco makes quality diamond bits in a variety of grits.  Click here for the shapes available. Lasco also carries rubberized abrasives, but I haven't tried them.

Cratex Rubber Bits: Ellen Abbott uses medium and fine silicone polishing bits. There is an assortment kit available, but it only contains four bullets.  Find them at Rio Grande, but they are about $56 for 100.  Be sure to wear a mask when using these...they throw nasty stuff up your nose.

3M Diamond Polishing Pads: Available at HIS Glassworks.

  • Green: 60 grit
  • Black: 120 grit
  • Red: 200 grit
  • Yellow: 400 grit
  • White: 800 grit
  • Blue: 1800 grit

Tub and Tile Polish: Available at Helios.