This version of the files is old!!! Visit https://www.printables.com/model/234941-interlocking-concrete-block-model for the latest version.

These are the actual block models that I used to create my concrete casting forms (see also https://www.printables.com/model/234938-scale-interlocking-concrete-block-form)

For smaller modelling scales casting these blocks in real concrete is notr feasible, so here they are for actual printing use in smaller scale:

The original scale is 1:8 so here some examples to scale to your need: 1:14.5 55.2% 1:16 50% 1:35 22.9% 1:50 16% 1:64 12.5% 1:72 11.1% 1:87 9.2%

I am not printing them myself, so please leave me a comment or better add a "make" what scale you did print and what type of printer and rough settings you sucessfully used. :)