I have been considering fitting a clutch to my lathe. It occurs to me that often when using a lathe we take a small cut stop the lathe, measure, restart the lathe, take a small cut and stop it again. etc, etc. This constant stop start cannot be good for the motor, particularly the start caps, and switch gear. Most of the lathes that I used when working had a clutch and the motor was left running. The clutch often incorporated a brake. I would also like to have a brake. So I'm thinking would a clutch taken from an auto A/C unit be suitable, my lathe motor is 1.5 HP. I'm sure the auto A/C clutch can handle more than that. It also occurs to me that a second such clutch could be set up to operate as a brake. I realise that it would require a 12v dc power supply, but that is not a problem, not sure how many amps it needs. Would this work, has anyone tried this or something similar, or am I missing something obvious.