This is the second miter saw station I will be using in my shop. The first was for small cutoffs and 2×4 lumber. This one is for the wider and longer stock. It is a salvaged 42” sink base cabinet on wheels with 40” wings on either side. This gives me a total distance of 10’2” from end to end when extended. The arms fold down straddling the mounting brackets to take up less space and give a nice clean look. Total arm surface area is 40” x 11.5”. The dimensions can be modified to fit any need and are extremely easy to build. No special hardware to buy. All hinges are made with 2-1/2” kreg screws. Here are two videos; First, the design process in SketchUp. And second, the build. For those who do not use SketchUp I highly recommend it. Truly a great tool for all woodworkers.
-- Jay - http://www.jayscustomcreations.com or http://www.woodworkingwithsketchup.com