For the metalworker there is a unique spot welding gun that uses the arc process. A nice plan for a dual burner melting furnace that will melt 10 lbs of metal up to 2000*F. There is a plan for a lathe tail stock spindle adapter and another unique plan for a roller action sheet metal brake. The brake plan comes with a nice article on its use and there is a nice long article on heat treating in the home shop.
Lots of short article jigs and tricks.
To download click Popular Mechanics Shop Notes Highlights 1964. 3.5 MB pdf