Finishing up some small details. One of those details is installing the electronic switch for the Spal radiator fan.
The switch will be installed into the thermostat housing. A drill chuck is installed in the Bridgeport and out comes the “Last Word” indicator to find dead center of the spot to be bored. A 3/8″ hole is drilled first to allow the use of a boring bar…………tap size is .830-14 so it’s nice to have the infinite adjustment of a boring bar.
Boring bar doing it’s thing.
Perfect…..ready to be tapped.
Tapped and switch installed.