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).

11.   What fluid is used for cooling passages in plastic injection mold to control temperature. 

13.  What types fo plastics did we discuss in Plastic Injection Molding

5.  It is important to have the cavity number on a multi cavity plastic injection mold, so you can troubleshoot problems or issues.

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.

Bonus 1   Why do they surface grain or etch a plastic injection mold, what is the purpose?

7.  Date grids or codes are important on a plastic part that is used in a car, in case of a recall, they can isolate suspect parts.

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

1.  Making a plastic part is similar to what operation that we discussed in the PP during week 1?

What would be the proper blade length for a bandsaw with 22 inch pulleys and 42.5 inches center to center distance?