Casting – Bill Harr (Back by Popular Demand)

Wildacres – August 21-27, 2017

Class Description:

This class will teach silver casting for beginner and intermediate silversmithing. The emphasis will be on production centrifugal casting, meaning techniques for high reliability. The class will teach centrifugal and vacuum casting, wax modeling, sprueing, investing, burnout, casting, finishing and polishing, rubber mold making and wax injection. Steam casting will be covered if there is interest. Waxes will be available, and students will learn to inject their own. We will not spend much time on wax model making, but students will have that opportunity. Students will learn to make cast silver embellishments for their silversmith pieces. Students may bring items they wish to make molds of. Pictures of previous student’s projects can be found at:

Lab fee is $80. This covers waxes, investment, molding rubber, and incidentals and teaching materials. Students may supply their own silver. Casting silver will be available at $1/gram. Unused silver will be bought back at a discount. Students should expect to use up to approximately 3 troy ounces of silver for each cast, but much of that will be reusable on subsequent casts (buttons and sprues are reusable). Students need only to keep the castings they want. Students are recommended to bring their own eye protection and face mask. Optivisors are handy for waxes.

Lab Fee: US$80

Estimated Materials Cost: US$0-100

Prerequisites: none

Casting – Bill Harr –


Bill Harr got started in metals and gems around the turn of the millennium, after several trips to Australia left him with rough opal and no idea what to do with it. He joined the Canaveral Mineral and Gem Society, and the Central Brevard Rock and Gem Society, and took a lot of classes. He was the president of CM&GS for three years, and is the current show chairman. He has taken casting classes from John Almasi of CM&GS, and Don Norris of the Colorado Academy of Silversmithing. He has produced approximately 200 rubber molds for wax injection. He is currently casting 8 flasks twice a week, primarily orchids, for his business His work is on sale in Melbourne, FL at The Petite Boutiques.