How is the cabinet bottom typically installed?

• A. Nailed from the outside only.
• B. Placed inside a bottom groove or nailed.
• C. Bolted to the face frame with screws.
• D. Floating without any attachment.

Answer: (B)

The bottom panel is captured in a groove so it sits securely and stays aligned as the wood expands and contracts with humidity. Installing the bottom in a groove cut into the sides (and sometimes the back) keeps the fasteners hidden and gives a clean exterior, while still allowing the panel to move slightly with seasonal changes. This method also supports the weight of contents without pulling the panel tight against the outside, which helps prevent warping or misalignment.

Nailing from the outside would leave visible fasteners and can risk splitting or pulling the edge apart. Bolting to the face frame changes how the cabinet behaves as wood moves and can complicate assembly. Floating the bottom without any attachment would let the panel shift or sag, compromising alignment and stability.