Donna Gordon

Figurative Bronze Sculpture

 
 
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The Lost Wax Method of Casting



After I complete my sculpture in plasticine clay, the work that goes into creating a bronze is only 30% complete.  Now the casting process begins.

  • First we cut up my sculpture into smaller pieces.
  • We then make a rubber mold of each piece.
  • From the mold we make a wax replica which we refine to correct any flaws.
  • We then make a ceramic mold from the wax replica. This mold takes over a week to build through several applications of clay slurry.
  • The ceramic mold is placed in a kiln to burn out the wax inside (hence the name LOST WAX)
  • Next, we pour molten bronze, heated to 1900 to 2200 degrees, into the ceramic mold.
  • After the newly poured bronze cools, we chip away the ceramic mold.
  • We then sand blast the remaining bronze.
  • After welding all of the pieces back together, we eliminate all welding marks and recreate any of my markings lost during the process.
  • The final step is to add the patina, or coloration, using layers of oxides and acrylics, heat applied with a blow torch.

 

 

 

 

 

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