Recently the small plastic frame that holds the 2 steel rollers in the Window shutter winding mechanism self destructed. I have ordered a new winding mechanism, but until it arrives I need the use of the roller shutter so I designed and made this substitute. It gets very hot in OZ at this time of year :)

Very easy to print, and I just opened the holes up with a 4 mm drill to take the existing roller 4 mm diameter axles.

Maybe someone else will find it useful