Delta Kossel ZProbe Optical Endstop Flag

An optical endstop flag for the Nylon "Delta Kossel Fisheye Effector with Adjust balance Levelling Hammock" commonly available on Aliexpress.

While this effort boasts "autolevel", there is no obvious way (or instructions on how) to attach either an optical or mechanical endstop switch.

Thankfully, rwubbels has shared his "Kossel effector autoleveling with optical switch"
http://www.thingiverse.com/thing:1191506
a simple standoff to attach an optical autolevel sensor, however while he use