Motion

Parts that make things go.

Washer Material

Similar to the material of metal used, different types of washers can have drastic effects on the performance of a subsystem.

Plastic Washer	Metal Washer
Metal on Metal Contact	Plastic on Plastic Contact
Metal on Plastic Contact	-

Using plastic washers between two pieces of metal or metal and plastic helps to drastically reduce friction, and provides for a much more smooth rotation. In cases of plastic on plastic contact, metal washers provide the same benefits.