Re: Cold rolled steel, flats or square for use as rails.

Will only be designing gantry as single side drive. Round figures,
gantry will be about 5ft wide, in shape of triangle. Bearings will be
mounted on a truck/carrage that is say 2ft long. Table size 4'x4'.
Will either use those concave type bearings or normal flat bearings.

Will be for a slow moving gas cutting table. No fast speeds.

Rails dimentions rough idea either square 1"x1" or flat 1/2"x3".