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Problem Remedies
Wax Pattern Sticky-Pattern Distortion
  • Reduce Wax Temperature
  • Increase Pattern Dwell Time
Pattern Flashing/Fins Mild Overfills
  • Reduce Wax Temperature
  • Clean Mold Vents, Increase Size & Quantity of Vents
  • Reduce Air Pressure
  • Hold Mold Firmly/Keep Locks Aligned
  • Allow Mold to Cool
Excessive Pattern Shrinkage
  • Reduce Wax Temperature
  • Use a Low Shrink/Low Sink Wax
  • Use Warmer Mold
  • Increase Pattern Dwell Time
  • Increase Air Pressure
  • Increase Sprue Size
Sink Area on Large or Heavy Patterns
  • Reduce Wax Temperature
  • Use a Low Shrink/Low Sink Wax
  • Increase Pattern Dwell Time
  • Increase Air Pressure
  • Increase Sprue Size
Air Bubbles in Pattern
  • Reduce Wax Temperature
  • Increase Wax Temperature
  • Reduce Air Pressure
  • Make Sure Wax Pot is Full
  • Minimize Trapped Air in Wax
  • Fit Mold Properly & Securely Onto Injection Nozzle
No Mold Fill or Partial Mold Fill
  • Increase Wax Temperature
  • Use Warmer Mold
  • Clean Mold Vents, Increase Size & Quantity of Vents
  • Increase Air Pressure
  • Increase Sprue Size
  • Reduce Mold Release Spray/Do Not Use Talc
  • Use More Fluid Wax to Fill Thin Sections
  • Make Sure Injection Nozzle is Not Clogged
  • Do Not Hold Mold too Tightly
Ripples on Pattern Surface
  • Increase Wax Temperature
  • Use Warmer Mold
Cracking/Brittle Wax Patterns
  • Use a More Flexible/Ductile Wax
  • Reduce Pattern Dwell Time
Roughness on Pattern Surface
  • Use a Smoother, More Polished Master
  • Reduce Mold Release Spray/Do Not Use Talc