this is so very awesome! this is the type of things we wanted to see being made to improve quality of life for people, great job. my only suggestion is maybe to print some parts from semi flexible rubber type filament. it sounds soft but it really is not. it will bend a bit but after a few layers thick that almost stops and this stuff can never break ever! i tried to snap a strand just 1 by hand it is impossible for me. so many together well you get the idea. it will work great for this. hope you see for yourself as it should add some comfort aswell. thanks so much for sharing!!