My friend asked me if I could help him with repairing broken fan in Gigabyte HD5770 graphic card. Fan for this card is unusual because it's mounted to the card for three bolts and it's not available in any computer shop (only in some internet shops). My friend had no time to wait for shipping so I suggested to print supports for standard 80x80mm four bolt fan (available in any typical computer shop)... and it works great in that set! Much cheaper and faster solution.