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Gas Porosity  
Cause Remedy
Overheating the metal. Reduce metal casting temperature.
Inadequate burnout. Increase the time at 740oC.
Flask overheated during burnout. Ensure maximum burnout temperature does not exceed 740oC.
Torch flame incorrectly set. Ensure that the flame is not oxygen rich.
Impurities in the metal. Do not use more than 50% recycled alloy and ensure it is clean.
 
     
Casting-Trouble Shooting 
Mixing Guide   
De-Wax & Burnout Cycles   
 
   
   
       
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