Check out this:
Here are the pics. I could not find the write up.

http://www.sawmillcreek.org/showthread.php?t=1055

http://www.sawmillcreek.org/showthread.php?t=1056

http://www.sawmillcreek.org/showthread.php?t=1054
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Secondly - do a "search" for contractor saw cabinet or contractor saw in the "search" category above. You'll be surprised how many of us made some type of base for our contractor saw.