Editor’s note: The following guest post was written by Ryan Finlay who blogs at www.recraigslist.com. The scrap yard’s electromagnetic steel excavator picked up my two steel die cast molds and put them on the scale. 1,240 pounds of steel! That meant $179.80 in my wallet for an hour of work. Not bad considering I picked them up on the free section of Craigslist. I make my living on Craigslist. It’s