Wonderfully created model, your hard work and attention to anatomy is amazing! Scaled down to 65% successfully, which i think is perfect for a 28IN dummy 13, but mine is a 24IN, now redesigning lower arm & metacarpals to give him an infinite emotional range. Going to try for a 60% scale for a dead to rights fit. Plan on drilling out tiny hole at thumb and run a fishing line through joint to keep it stable, and using tiny screws at other joints at this scale.