You should get one of these, best thing to build on. I have one that more then 20 years old.
Guillow Workboards
WB36 - 36" Workboard
WB48 - 48" Workboard
Solid workboards made with all balsa and designed to resist warping. Will save household tables or hobby work bench from messy glue spills and pin holes.
http://www.guillow.com/guillowList.a...915&familyid=6