I need to lift a box that weights lets say 5 pounds, (27 7/8 wide and 4 inches tall, 3.5inches in depth) up and down about 36inches. This is actually a transportation device (much like a verital moving conveyor).
I kept thinking about my CNC building ideas. I thought I could do the above with the same parts you can use to make a CNC router. I was thinking 2 metal rods with linear ball bearings, a ballscrew, stepper motor, and a contact switch at the bottom that will tell that the box is down at the bottom.
Does anyone have any suggestions? Does this sound like a good idea? I am concerned about the speed.. I would like to be able to move the box up and down in 3-5seconds max.