If you have viable storage and are willing to organize things on a basic level the junk yard business can be quite lucrative. If you can get a good volume of parts for a reasonable price you benefit from the economy of scale. I have done this over the years on a limited basis and I would say it has benefited me. I don't need to rely on outside suppliers for most parts I need. Having a number of examples of any given piece on hand is also useful when you are dealing with machines that were constructed originally using "selective assembly" techniques. I have found that a significant portion of what remains as NOS parts is actually a lot of defective junk. The reason there is one last new part on the shelf long after all the others of its type have been sold is the last one is defective and would not work. I would rather have a viable used part than a new piece of junk. When I buy a trove I make an effort to sell enough to recoup my investment and then, as far as I'm concerned, the rest is free.
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