A lot of small pieces and a lot of work went into this one.

Big thanks to Andrew Smith (conqueror worm) who produced a detailed set of drawings for the hand back in 2011 which I heavily based this on (though I had to make some modifications to get it to work). These drawings are still floating around the net and I found them via https://www.therpf.com/
Andrew also has a YouTube channel at:    / @conquerorworm1522