Lampshade mounting bracket

I designed this because the lampshade for my overhead lamp didn't fit properly with a CFL bulb. This bracket allows me to use a small and inexpensive lampshade of my choosing by lashing the frame to the lampshade with wire. The frame includes three mounting holes arranged at 120 degree intervals to fit the screws found on most light fixtures but this is easily adjusted.

The base dimensions are a 94mm square for the bracket, with the inner ring having an OD of 84mm. This should allow you to attach pretty much anything you'd like to a ceiling fan such as the one pictured, but the SCAD file is included if you need to make precise adjustments