University
The exercise was to take one bracket from sketch to moulded part on the department's bench press. Mine held a sensor on a frame, so it needed stiffness in one direction and almost none in the other.
The first tool gave me sink marks exactly where I had been warned they would appear. Version two moved the boss off the thick section and added a rib, which fixed it. Wall thickness stayed inside 2.0 to 2.4 mm across the part.
I kept every reject on my desk for a term. They are better teachers than the good ones.
Checking wall thickness on every part in the batch.
The cavity half, polished and ready for a trial.