Before casting or molding a model of any type, it is extremely important to carefully inspect the pattern for defects and potential production problems. Look for pits, hairline cracks, tool marks, and vacancies (large pits).

Editor’s Note: This article is part of a series on evaluating and revising CAD/CAM models for production.
Mastered Models I
Mastered Models II
Mastered Models III
Mastered Models 4