Fill Gaps and Sand Shelf Boxes

What happens here

Once the glue has fully cured, apply wood filler to any visible gaps, nail holes, or imperfections in the assembled shelf boxes. This step ensures a smooth and flawless surface. After the filler dries completely, thoroughly sand the entire exterior of each shelf box using an orbital sander, progressing through various grits of sandpaper until a refined finish is achieved.

Goal: Apply wood filler to imperfections and thoroughly sand the shelf boxes to achieve a smooth, ready-to-stain surface.