Speed Control and Display Box

When the motor died on my 12" x 37" gap bed metal lathe I took the opportunity to make a few planned upgrades including converting the lathe to a variable frequency drive and 3 phase motor.

Of course that meant that I would need to either manually calculate speeds using the motor frequency and selected gearing or I'd need to install a tachometer.

I went with a tachometer. I later intend to upgrade to an arduino controller so I can also calculate the workpiece surface feet per minute and lathe feed rates.

Since others may have different requirements I've added three flavours of control panels and two different box depths. The deeper box is required when using any of the 16mm switch options.

January 9th 2022 addendums:

added control box front plate to accommodate Power switch.

added control box front plate to accommodate forward and reverse jog buttons.

added deeper control box to accommodate depth of LED switches with long wire sockets.

I intend to use a very