I MENTIONED SMALLPARTS.COM EARLIER, and reader Jonathan Guest writes: “I wish I’d known you were interested in sources like smallparts. I’ve been aware of them for nearly 30 years. They’re great on certain items, but the prices are steep. A much broader selection is available from Mcmaster-Carr at mcmaster.com. Great website, super service. Their prices are also a little higher than you can find elsewhere, but lower than smallparts, I think, and the quality, service and convenience are outstanding. We order stuff from mcmaster a couple of times a week and it’s here 99% out of the Atlanta warehouse the next morning by fedex ground.”