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Laser power can be controlled to merely ____ the plastics surface or actually vaporize and melt it.

The hardened excretion of the lac bug has unique properties, and can be made into____. 

A milling operation in which the work moves in the same direction as the rotating cutter is____ milling. 

Pioneers in the development of early commercial synthetic plastics struggled with ____. ​

​In a tumbling-barrel process, the smoothing agent is a(n) ____ and a lubricant.

Induced fracture methods for cutting plastics are similar to those for cutting ____. 

Which event contributed to a surge in the development of plastics? 

Types of actions that are not of immediate danger but may lead to injury if repeated over days, weeks, and months are associated with ____. 

One of the first synthetic plastics was discovered by Dr. Leo H. Baekeland as a result of the chemical reaction of phenol and ____.