Lignostone is densified Beech wood. Somehow a synthetic resin have been applied and the wood have been compressed (with heat I think)
It makes a wood that have almost no voids in it. The mass weight goes from normal Beech’s 0,71 g/cm3 to 1,35 g/cm3.
The boards I have is solid boards 8mm thick and are 60 years old. Here in Norway the material was used as edges on wood skies.
It is very strong in both tension and compression.
Being so heavy it is probably not the ideal bow wood, but it can be used in designs that most woods can not take.
It is still made today, but only in veneer form and not in the board form that I have.