This remix cuts out material to provide enough clearance to use both the PCB mount and the cutter arm on the same unit. Because the top hole on the PCB mount isn't complete, make sure not to overtighten. I also recommend using an m3 washer here.
You can download CAD files from the Onshape document here.
The author remixed this model.
Cut out material and shifted hole spacing to provide enough clearance to use both parts.