In article ,
Ignoramus11200 wrote:

My question is that the mounting seems to be a simple thread.
....
Am I missing anything?


Simply the fact that such mounts are not intended for use with braking
or reversing - at most slow speed light cut reverse if any reverse at
all. I've got a couple - a 2 x 6 on one and a 2-1/2 x 6 on another,
IIRC. Lathes that will swing 20 and 17 inches, respectively, with flat
belt drive and Babbit bearings, about 130 years old.

If you do anything stupid, they will bite you. You either learn to not
do stupid things, or you learn that you need a more modern lathe with a
more idiot-resistant chuck/faceplate mount.

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