So I want to design something similar to the attached (I made it in tinkercad, but In the highlighted blue area area I am unable to get a claw like shape…(basically the equivalent of a lego mans hand instead of a block) Ie the plan is to have it clip onto the axle. Would anyone have a suggestion on a software that allows me to get small details (1mm etc) and relatively easy to use?http://ift.tt/29tzk4E you VEditAwesome advice guys Thank you http://ift.tt/29zYIYu