The plan the lumber aisle should have printed
Type it. Buy the parts. Build it.
Measure a space. Yard returns a cut list, hardware, and shop links — for the hole you actually have.
For the house
See more of the houseFor the weekend
The size you typed
31.5 × 78 × 16 means 31.5 × 78 × 16. Geometry is deterministic. Grok writes the assembly voice — it does not invent a 36″ closet.
Cut list + hardware
¾″ plywood, screws, shelf pins, a window unit. Nominal retail sizes — not fake geometry.
Shop, then build
BOM with packs, prices, and deep links. Print the plan. Buy the parts. Crafts (Eiffel, arch, bridge) use the same bench.