I like this sled build project. I just got down building my own, but out of scraps vs alot of folks that build it with new materials. One addition I plan to do from this build is to add in the slot stop block. Nice addition and I can just run my router thru the backboard to put the slot in.
http://www.instructables.com/id/Cross-Cut-Sled-W-Adjustable-Stop-Block/