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.

47.  In  Chapter 9, only a few simple steps are needed daily to ensure the long term production safety of the molds or dies.

46.  In Chapter 9, regular care (PM) of molds pays off in the long run.

Given the general triangle, which is not drawn to scale, and  a=10, b=5 and c=6{“version”:”1.1″,”math”:”a=10, b=5 and c=6″} Find the exact measure of angle A.  If A is a special angle, give me the angle in degrees.  Otherwise, leave it in terms of an inverse trigonometric function.

Solve the equation for all possible real number solutions. cosx=sin2x{“version”:”1.1″,”math”:”cosx=sin2x”}

5. Insulated mold plates are recommended if the operating mold temperature is greater than 150f.

19.  The correct vent depths for the following plastics recommended by material supplier     – ABS   .001-.0015″     – PP    .0005-.0012″     – Glass Filled Nylon  .001-.0025″

3.  The picture below is an example of which of the following?