Spindle Encoder Mount and Coupling

A bracket and coupling to mount an Omron rotary encoder on the spindle of my SIEG SC4 lathe, for use with the Clough42 ELS system.

The coupler is 16mm to 6mm, with a 4mm keyway for the larger shaft, and a hole for a 3mm set screw to secure the smaller shaft.

Bracket uses a 1/2" stud that replaces the lower right cap head screw (see pics). This is a fabricated part and you'll need to make one. Length is to suit.

I'm putting these on thingiverse in the hope it may help other SC4 owners, but usual caveats apply - these fit my lathe, with the dimensions of my spindle shaft and the distance of the spindle & stud location centres. It's also specific to the Omron encoder that I'm using (E6B2-CWZ6C 1024P/R)

I've uploaded the STEP files, in case anyone wants to tinker