For me, I wait until I have at least 15-20 pounds to take in.... sometimes every week, sometimes I have to wait a couple weeks.. this is all tubing and such... like plumbing, a/c unit lines, etc.......... I have a 500? gallon fiberglass water tank that is 3/4 full of aluminum and copper wire..... I have been looking for a easy, relatively inexpensive way to strip the wire and i am hoping the prices hold... hoping to cash in by spring with $500 or better