Revised version of Reibuehl's thoughtful design. Link here - https://www.youmagine.com/designs/ultimaker-2-tool-holder-olsson-block-edition  This changes the mounting flange downwards and adds support structure to the design with the 45 degree supports. It also changes the print orientation to make the complex bits print on the glass, and the flange to print in the positive Z axis.

My first submission/re-make/change. New to the 3D printing world, but 3 decades of engineering experience. If you ask about the ABS hood in the background of the pic, I will throw that up here too. The hood and the front panel that will come with it work really well for ABS.... :)

Regards