Flow Lines

Technical Support

Struggling with a specific casting defect or just need general technical support?

Thanks for submitting!

  • Irregular shallow round or angular grooves that appear on the surface of the casting

  • Indicates that the ceramic shell was built around a defective wax pattern

Causes of this defect are evident in the wax portion of the process; to cure, R&R recommends taking the following actions:


Excessive die lubricant, low injection pressure, cold wax, cold die, or poor flow rate.

Adjust the wax parameters to eliminate flow lines, temperature, pressure and flow rate.