Composite material reinforcement materials. Another important factor is the gross quantity of material to be produced. Large quantities can be used to justify high capital expenditures for rapid and automated manufacturing technology. Small production quantities are accommodated with lower capital expenditures but higher labour and tooling costs at a correspondingly slower rate. Many commercially produced composites use a polymer matrix material often called a resin solution. There are many different polymers available depending upon the starting raw ingredients. There are several broad categories, each with numerous variations. The most common are known as polyester, vinyl ester, epoxy, phenolic, polyimide, polyamide, polypropylene, PEEK,
Unusual types of gramophone records the album "Rings Around The World" as a 3-record set on Epic Records. Sides 1, 2 and 4 played normally. Side 3 played from the inside out and side 5 was on a 7-inch single. The side consisted of one recorded groove in the center of the record and was a perfectly timed loop of the music of a non-album song called "All the Shit U Do." Canada's Legion Of Green Men took the art further creating several records and remixes containing what they called "Eternal Opuscules", rhythmic tunes and songs which would play seamlessly to a recorded locked groove