This meeting had a lot of discussions about making gears and gear cutters.
One member is building a Eureka cutter relieving device to make cutters for T2.5 timing pulleys. A series of articles in HSM gave more information in making gear cutters. The Eureka design dates from 1895 with a slightly more recent patent in 1906 giving hints on a more buildable version. The actual one built was from articles in ME, 1980’s.
Some examples of cutters and the required buttons to form them were shown. These are being used for a 9 cylinder radial engine.
One of the members has a gear hobbing machine for serious work: It uses gear hobs, not cutters. Another member has made these and successfully cut small gears with them
For some entertainment, and useful parts, we were given a demo of dismembering a microwave oven. Particular use for the transformer is to rewind it to make a spot welder.