40.  In chapter 6, we discussed lost core technology, what alloy core was installed in the mold (hint it has a lower melting point than plastic).

44.  In graining a plastic injection mold surface, the techniques are vased on etching metal through (using) __________________.

32.  ________________________   ________________  this type of gate is used for molded parts that do not allow a gate mark on the visible surface because they are to be imprinted or chrome plated.

29.  The biggest advantage of a Hot Runner Mold is waste free (no runner).

Bonus 3   In addition to identifying the storage locations, the mold identification must be attached on the shelf.  The following information is useful for the assignment of the molds:   List 2 of the 6 listed

4.   List 3 different examples of items we use every day that made out of plastics.

9.  During the mold design, that is the stage when you decide gate type and location, also a Mold FLow Simulation would give an idea to fill of the part (good starting point).

27.  Three plate molds have advantages in that molded parts and sprue spiders are ejected from two different openning areas of the mold (no trimming gates is nescessary).

49.  Molds should be stored wet and not protected against fire.

23.  Parts with internal undercuts are fundamentally harder to demold.