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