Quote: has any one built an
escalator? it is a moving staircase – a conveyor transport device for carrying people between floors of a building. The device consists of a
motor-driven chain of individual, linked steps that move up or down on tracks, allowing the step treads to remain horizontal.
I've been having trouble teaching my group to go up the ramp. They'll go down. Yesterday I widened the ramp and put a lot more crossbars on it for better traction. Hopefully they'll learn to go up it now...fingers crossed.