Round hole, square peg??
One of the first questions I asked when I was introduced to Bamboo Flooring was “how do they make a flat floor from the hollow round bamboo stock?”…..
The bottom two thirds of the bamboo stock is cut to length and then split into approximately 1” wide strips. These strips are then milled square, glued and compressed together with heat to form boards. A tongue and groove profile is then cut into the sides of the board, it is sanded to thickness and the protective finish is applied.