TipSheet 5: Bullseye Box Casting | Kilncasting

TipSheet 5: Bullseye Box Casting

kilncasting tips: create amazing relief print castings with the box casting method


This TipSheet describes how to create a reverse-relief cast glass object with the optical clarity of a furnace casting, using plaster/silica design elements in an open-faced mold assembled from vermiculite board and other refractory materials. There are several advantages to this process:

  • Less waste than traditional kilncasting processes
  • The majority of the molds will be reusable
  • Molds will be of uniform thickness, allowing for uniform heating and cooling
  • Molds will not fail at casting temperature (one of the most common concerns in kilncasting and the reason there is such a boggling array of mold recipes in use)
  • Cleaner and more predictable results than kilncasting in most of the traditional methods
  • Extremely easy to repeat for the purpose of making editions or production work


TipSheet 5: Bullseye Box Casting PDF
(Revised July 21, 2013)

Helpful Resources

What to Expect from Bullseye Glass
Tips for Using Vermiculite Board
Working with Accucast 880 Blue
Annealing Thick Slabs Chart in Fahrenheit & Celsius
Glass Cleaning Basics PDF
Kilnforming Notes PDF
Safety in the Kiln-Glass Studio PDF

Featured Products

Accu-Cast Alginate 880 Blue, 1.5 lbs (.68 kg) (8712)
Bullseye Investment (8244)
Bullseye Vermiculite Board (8240)
Fiber Paper, 3 mm (7036)
Rhubarb Shift Tint (001859-0065-F) for featured casting
Leponitt Heavy Duty Running Pliers (7007)
Toyo Self-Oiling Cutter (7010)