Building a custom oak cabinet recessed into a bathroom wall can be a rewarding project that optimizes space while adding unique style. From my experience completing day two of this process, the key steps involve careful framing, addressing imperfect drywall edges, and thoughtful finishing for durability. One challenge I faced was dealing with jagged drywall edges around the cabinet opening. To overcome this, I crafted a precise face frame at a 45-degree angle that fits snugly around the perimeter of the box. Instead of leaving gaps or uneven seams, I applied wood glue directly into any spaces, then used 220 grit sandpaper mixed with the glue to create a custom-color matched wood filler. This technique made the joints disappear visually and ensured a smooth transition between cabinet and wall, even in the humid bathroom environment. Finishing the cabinet involved applying hard wax oil, which not only highlights the natural grain of the oak but provides a moisture-resistant, durable surface — crucial for bathroom installations. Watching the wood grain 'pop' after finishing is truly satisfying and a standout moment in cabinetmaking. For securing the cabinet, I used trim head screws anchored into wall studs. Their tiny heads are barely visible once installed, giving a clean built-in look without compromising structural integrity. Installing shelves inside the cabinet for added storage was another focus, allowing me to rip a small access hole for extra hidden space. Overall, this project demonstrates how attention to detail—from gap-filling with custom filler to thoughtful finishing choices—can transform a standard bathroom wall into a stylish and highly functional storage solution. If you’re considering a similar DIY bathroom cabinet, prepare for some precise carpentry, but the finished piece will be more than worth the effort.