As such, aim to find stair treads that leave roughly 1-2 inches of empty space on the sides and no more than 1 inch of empty space on the top and bottom. Most stair treads are 22-36 inches long ...

Instead, my treads were like a porous, MDF kind of wood. Also, there was a gap on either end of the stair pieces because of ...

[Mike Li] is showing of his stair climbing robot. It’s a bot that cruises around on a pair of tank treads, but some interesting modifications gave him the traction needed to ascend a flight of ...