It’s hard to pin down exactly what tooling board is. Most of the blends are proprietary. It is usually a very dense polyurethane foam, sometimes by itself, sometimes with a fine fiber filler.
Your boards will look most authentic without a clear coating, but if you need a more durable finish, let the stained boards dry overnight before brushing on a coat or two of polyurethane. Choose a ...
But environmental campaigners say the manufacture and export of polystyrene and polyurethane boards and neoprene wetsuits comes with a significant carbon footprint. One long-standing study ...