Inspiration from Jolars' make for a Nikon Speedlite (http://www.thingiverse.com/thing:643507). I did a coarse print to test the fit and effectiveness in pink because I had a lot of it and very little natural filament. Comparison photos are direct flash / bounce flash. For the HDD shots I glued a piece of white paper to the reflector to reduce the colour cast. The blank shot is of a white wall, area approx 5' x 5' to show the light spread. About to print off the final version in natural filament . . .