Ok, so I see references to Craftsman Block Grinders, Pre-Block Grinders, Not-A-Block Grinder. Block grinders seem to be fairly sought after. Can someone let me in on the secret and explain the differences, etc.
Manufactured by Paramount/Allegretti & Co. from the early 1960's to early 1980's. Affectionately known as "Block Motor" grinders because of their unique shape, these power tools have developed a large following among shop enthusiasts because of their legendary reliability, accuracy, and power.
The "Block Motor" grinder can be readily identified by the Sears manufacturer prefix of 397 or 257 (as in 397.XXXXX); which is stamped on the front label. Popular models include 1/4HP, 1/3HP, 1/2HP, 3/4HP, and 1.0HP Industrial units.
