I hate it when I go to a job site and see some carpenter trying to cut a long molding while his $800 miter saw is balanced on a piece of drywall set on a plastic trash can. For one thing it's dangerous. I like a continuous wooden table that's long enough that I can safely trim the end of a 10-footer. I also want to be able to screw a stop to it for repeat cuts.
This is the saw stand I use. It takes me two hours to build; it's made of four 8-foot 2x4s, an 8-foot 2x6, less than half a sheet of 3/4-inch plywood, a few 1 5/8- and 3-inch drywall screws, and four 3 1/2-inch-by-3/8-inch carriage bolts. I usually mount a power strip on it so I can use it as a workstation too.
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