Since this thread started I have been getting pop-up ads for the Bosch j-saw on Facebook and Yahoo. Lots and lots of them. I have a couple j-saws, at least one of them maybe older than me. Yep, that's really old. Only comment I can add is the first j-saw I ever used was a barrel type, I think it was a Scintilla (sp?) brand, it got pretty hot to hold after several minutes of using. That was back about ca. 1950.