KEYWAYS & BROACHING, HOW TO FIND STANDARD AND PREFERRED SIZES, MACHINERY'S HANDBOOK MARC LECUYER

From a channel Lumen includes in full: Marc L'Ecuyer, a retired machining instructor, gives structured free machine-shop lessons (lathe, milling, grinding, jigs and fixtures, sequence of operations) in a classroom-course format.

A 18-minute video from THATLAZYMACHINIST's catalogue; the title names its topic.

Video by THATLAZYMACHINIST, played through YouTube's embedded player.