A vertical, isoplane oak door features two perfectly machined vertical grooves on the handle side, creating a visual striation effect while being integrated into the veneer, maintaining the continuous alignment of the wood grain. The oak veneer, with its edge-to-edge vertical grain, ensures a smooth and refined surface without any disruption or pattern variation. Stained in a deep brown, the color enhances the contrast of the grooves, subtly reveals the wood's grain, and adds a warm, contemporary tone to the design.