Estate sales take a lot of time. Occasionally you'll find a treasure trove, but more often than not, they're just selling a dead person's junk. The best source

Estate sales take a lot of time. Occasionally you'll find a treasure trove, but more often than not, they're just selling a dead person's junk. The best source of tools I've recently found was a local machine shop going out of business. I chatted briefly with the owner, who was retiring, and he could not find anyone else willing to learn the business/invest/take over. So he sold everything in his shop. Lots of good stuff.