Parametric Octagon Relay Board Mount

I am putting together the Makerbot Automated Build Platform 1.0 and need to put my relay board somewhere. The instructions on the wiki have a neat little octagon mount that mounts over a stepper driver. This is a printable version.

I have not printed this yet, but plan too soon - so check the dimensions before you print. Especially the standoff height depending on the length of the screws you use.

UPDATE: I updated the files to have two different hole spacings. One for the stepper driv