Sintering Refractory Ballast - Al2O3 - The Virtual Foundry

Sintering Refractory Ballast - Al2O3

  • $ 44.00


Use: Refractory ballast for firing Filamet™ materials in a vacuum. May be used alone or combined with Powdered Graphite.

Place the print in this refractory, ensuring the entire print and all surfaces are completely covered and any protruding areas are fully supported. The print must be fully surrounded by the refractory. Complete firing instructions

Stainless Steel 316L and High Carbon Iron Filamet™ require an oxygen-free environment. Copper and Bronze Filamet™ may be fired in an open environment. In this case, use Magic Black Powder to shield the print from oxygen. See chart below.

 Filamet™ Atmosphere Refractory
Copper & Bronze Open Magic Black Powder Al₂O₃ with Coconut Shell Carbon
Copper & Bronze Vacuum or Inert Powdered Graphite / Al₂O₃
Stainless Steel 316L 
High Carbon Iron
Vacuum or Inert Powdered Graphite / Al₂O₃

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