1. Product design

2. Mold structure

The mold structure should also be considered when choosing the parting surface. The parting surface should be aligned with the mold's closing direction for the production of high-quality and consistent products. Also, the parting surface should be designed to avoid any undercuts, which can cause mold damage and reduce the life span of the mold.

3. Material

4. Mold size

5. Production volume

6. Demoldability

7. Stripping angle

8. Tooling cost