Whilst helping to search for a source of filament pins for the ARX Hand Project, I had noticed that most large diameter filaments are sized 2.85mm in diameter. At the time of purchase when starting the projects, there were filaments that were sized to exactly 3mm for some reason. Current standard filament sizes are 1.75mm and 2.85mm, so I'll have to make adjustments to the design to allow for accommodation of either sizes. I won't fully move to 2.85mm as 3mm is a more common size for things like shafts and drill bits as well as some 3mm round nylon trimmer line if accessible (another possible source, 3mm nylon draw tape for cables). Nylon is still the recommended material for joints rand ratcheting mechanisms but if there isn't a source for a nylon sample, other materials may be used but will impact on performance and durability. Carbon fiber nylon is also another option to provide for a more stiffer material.

Currently, MK0M and MK0S have been updated to accommodate for either pin sizes.