05:18 <jesseg> Noxz, I'd be interested in hearing what it is you're doing with your ideal 360 step motor :D

05:25 <Noxz> I designed a differential rotary stage

05:25 <Noxz> where I get 6 arc minutes per rev of the (hand/motor) crank

05:25 <Noxz> thus, a 180 deg stepper would give 2 arc seconds/step

05:26 <Noxz> 180 step stepper*

05:26 <Noxz> I re-watched a few videos on differential screws which got me interested

05:26 <Noxz> and the idea of rotary differentials have been around for a while

05:27 <Noxz> so, at school (watchmaking 2 year program) I wrote down the hole counts of our indexing plate

05:27 <Noxz> and I wrote a few perl script sto crunch them, and spit out what gears I can make

05:27 <Noxz> then tooks those and figured out the divided-by numbers

05:28 <Noxz> then took those and differentiated (subtracted) them, and looks at the results for something near a whole number (of minutes)

05:28 <Noxz> turns out a 49:144 and a 34:100 differentiate to 6 arc minutes per rev

05:30 <Noxz> the idea here, then, is to make indexing rings, for each specific gear tooth count I want.. because I am essentially completely unsatisfied with the "Standard" indexing plates available for lathes (especially watchmaker's lathes)

05:32 <Noxz> accurate rotational positioning will essentially be the end goal

05:33 <jesseg> cool

05:33 <Noxz> I tried to figure, based on that PR plotter, what size I would need if I wanted a rotary encoder to track

05:33 <Noxz> to make a DRO

05:34 <Noxz> it may be easier to simply stick one on the input and calc that way