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[johansen]

You can google field weakening permanent magnet motor for some creative methods. Inser the words "d axis" into your search.

basically...

[johansen]

Could drill a hole in the bottom for a spring and ball, then fix a plate under it for detents.

Three ball plungers and 24 detent holes would...

[johansen]

Skip tooth pipe taps work because every other tooth takes double the chip load, and friction is not linear with chip load.

i wonder if more...

[johansen]

yes, go with angular contact bearings but, do something to preload them, even if only a few stiff wave springs.

you need preload to distribute...

[johansen]

How much would you want for the old one?

[johansen]

Amazon had 1000 sheets of 9" by 9" paper for 44$, cheaper than 1000 sheets of 6" by 6 paper.. Which makes no sense to me.

...

[johansen]

If an ice cube in the spindle doesnt work, a can of compressed "air" (r-152a) can take the spindle down to -10F. Preheating the chuck helps....

[johansen]

Probably harmless. Might even be useable by the plants as a source of nitrogen. My guess is sunlight would break it down