After the handgrips for the Praktica LTL3 and for the Zenit 12 Pro "Black Bone" I've built today a handgrip for my Zorki 4.
For the other grips I've used wood but for the ZorkiGrip I've used aluminium. I've got the idea from this grip for a Leica IIIf , from this grip for the Panasonic GF-1 and from the Bridge Uni Grip & Plate.
Yes Japan is the right country for us camera-freaks! And oh I've forgotten the original Leica Handgrip M. But I'm livin' in Brazil and have to do it myself ;)