Advise on motor speed control

This will be a long post

First off machining is a hobby for me. I am an electronics technician for a living and hope to fabricate a new circuit to fit into the old motor controller housing

The long story

I am looking for information for a motor speed control for the table feed for my Rockwell milling machine. The machine uses a Robbins and Meyers universal motor (see photo) and when I received the machine it was connected to a {dc-1} motor controller housing that had been gutted and some...

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