Need a corner cube in a pinch? Worry no more and simply make your own.
Best used with M5 bolts.
I highly recommend printing in either ABS, NYLON, or PC, all in a warm enclosure. Strength and layer adhesion are everything with these cubes. I also recommend using in conjunction with angle brackets or plates.
Print with 100% infill and as many walls as possible. Keep cooling and speed to a minimum for optimal strength.
The author hasn't provided the model origin yet.