Perform Final Hand Sanding

What happens here

Once all glue has dried, begin the final hand sanding process. Start with a medium-grit sandpaper (e.g., 120-150 grit) to remove any remaining glue squeeze-out, tool marks, or imperfections. Progress to finer grits (e.g., 180-220 grit) to achieve a smooth-to-the-touch finish. Pay close attention to all edges, corners, and internal surfaces, including the speaker grille slots and phone slot. Wipe away dust between grits.

Goal: Thoroughly hand sand all surfaces and edges of the assembled holder with progressively finer grits of sandpaper to achieve a smooth finish and prepare the wood for staining or sealing.