Mold Feature C

In Feature C, the extended length of the open pocket would be produced by a thin arm on the sand core.
That thin arm would be vulnerable to breakage because of its length and its small cross-section.
Feature C should be redesigned to reduce the length of the pocket.

This not only reduces the chance of core breakage; it also strengthens the flange.

Feature C does need to be changed

Choose another feature or
Go on to the next design issue.