ORAC Lathe Spindle Timing Gear

As I'm upgrading [my ORAC lathe](http://www.wolfteck.com/orac/), one function I want to play around with is precision spindle control. This timing pulley fits on the spindle, inside the headstock. It connects to the [stepper pulley](https://www.thingiverse.com/thing:2813941) via a [320-2GT](https://www.amazon.com/Timing-Belt-Closed-Loop-2GT/dp/B014SMT8DA/ref=as_li_ss_tl?ie=UTF8&qid=1520139134&sr=8-1&keywords=320+2gt&linkCode=sl1&tag=wolfteck-20&linkId=7f60711b3f4b59ee4d72814b0d7ec2af) timing b