Layout Board
Advice from a retiring woodworker: be cautious with homosote. It would be fine for gluing down stuff but it doesn't hold fasteners like screws and nails as well as plywood or wood.
Edward
tworail said:1/2 plywood seems to be the happy medium, but I would look for the material called 'homasote' (made of recycled egg cartons) which is far superior, although it would probably need some framing work.
http://www.homasote.com/
Advice from a retiring woodworker: be cautious with homosote. It would be fine for gluing down stuff but it doesn't hold fasteners like screws and nails as well as plywood or wood.
Edward