Section 1

Defects in Patterns

The many defects described in the following pages are not typically difficult to identify and the pictures are valuable in supporting the decision. In the process of wax pattern manufacturing, there can be a number of obstacles a producer may face in making high quality wax pattern consistently. It should be understood that any investigation into pattern defects begins with a review of calibration and the many items contained in the Best Practices section.

The interplay between flow settings, injection pressure, and wax temperature are often difficult to understand as they are highly dependent on the runner and part cavity geometry. If suggestions for potential cure do not bring success it is always wise to contact your wax equipment manufacturer as well as the wax supplier. They will often have great insight and direct you toward elimination of the defect.