After fighting Sketchup and discovering OpenSCAD I thought I'd try my hand at creating an easy to modify template for creating an effector for a delta type 3D printer.

M3 mounting holes may be set around the main opening - works best in multiples of 2. You can also set their offset from center.

The STL is simply for presentation purposes, by editing the .scad file you may easily change parameters for arm length, width & height as well as the nub distance, hot end diaphragm, etc...

Added bonus!
Make sure to check the OpenSCAD console and it should report the DELTA_EFFECTOR_OFFSET in mm for you to copy / paste to your configuration.h

This is most definitely a work in progress so please leave feedback!