In this 1945 Disney cartoon we learn about Primitive Pete, Disney's imagined inventor of the hammer. The film was made for mechanics in the Armed Forces, who, like Primitive Pete, might not employ the proper technique with their hand tools—hammers, pliers, wrenches, saws, and so on. So here's 30 minutes of detailed instructions (for the most part, actually very practical and useful) on how to use hand tools. Don't be a Primitive Pete! Learn about hand tools! Don't abuse the peen end of a hammer! Be a civilized human, for a change! (Brought to you by General Motors.)

If you liked that, you'll love Disney's Story of Menstruation.

(Via MetaFilter.)