Answer:
1. Granular rubber is mixed with special bonding material by hand.

2. The mixture is put in a two part (male-female) mold.

3. The mold is cold compressed. (This procedure actually takes place at room temperature.)

Sources: http://www.answers.com/topic/hockey-puck-1
http://www.madehow.com/Volume-6/Hockey-Puck.html
http://www.encyclopedia.com/doc/1G2-2897000054.html
Contributor: Deb
First answer by Deb. Last edit by MikeDavis. Contributor trust: 287 [recommend contributor recommended]. Question popularity: 191 [recommend question].