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I've been investigating (slowly, with a lot of help from @jookia and @amd ) a #DIY #CNC build. In the process, I have learned a lot of things, and felt like sharing some of what I've learned.

One example is from this video: https://www.youtube.com/watch?v=clgpZJFoqIQ

The tl;dws are:

1. Stepper motors (closed or open loop) never hit their holding torque at _any_ rotation.
2. Servos have less peak torque, but hold it at _any_ rotation speed they're rated for.

Conclusion for me: servos and gearing are best here.