Quote Originally Posted by curious aardvark View Post
ok the linear rails thing is unclear.
I assumed they were used for the vertical movement of the carriages. With rods attached in the normal way to the effector and carriages. The idea was to take any movement out of the wheeled carriages.
So, if not that - then what ?
Ya exactly that. Instead of wheels rolling up and down the extrusion or making brackets to hold the rods the rails bolt right to the extrusion where the wheel would have been rolling at. There is just no plastic, rubber, or PC anywhere in the metal bearings of the linear rails.