What you’ll build
A 24″ left side, a 12⅜″ right side, and a 22½″ bottom make the frame. Inside, a 12″ center box sits on a short divider, with small shelves and dividers stepping around it.
Shopping list
Buy these boards. The list fits every cut onto standard lengths and leaves ⅛″ for each saw cut and ¼″ for trimming board ends.
| Lumber | Length | Qty |
|---|---|---|
| 1x6 | 8 ft | 2 |
Cut list
All 12 parts, grouped so you can cut matching pieces together. Exact lengths and end-cut angles for every part are in the free plan in the TimberLab app.
| Part | Lumber | Qty |
|---|---|---|
| Divider / Shelf | 1x6 | 4 |
| Shelf | 1x6 | 2 |
| Divider | 1x6 | 2 |
| Left Outer Panel | 1x6 | 1 |
| Bottom Shelf | 1x6 | 1 |
| Right Outer Panel | 1x6 | 1 |
| Top Left Shelf | 1x6 | 1 |
Tools
- Tape measure
- Pencil
- Speed square
- Drill
- Eye & ear protection
- Miter saw
- Clamps
Step-by-step instructions
Assemble the Base Frame
Lay the 22 1/2-inch bottom shelf flat on your work surface. Align the 24-inch left wall and 12 3/8-inch right wall against the shelf ends, keeping the bottom and front edges flush. Clamp the pieces lightly to hold the frame square.
Position Lower Divider and Box Base
Place the 5 1/4-inch lower divider upright at the center of the bottom shelf. Set the 12-inch center box bottom across the divider's top edge, centering it evenly with equal overhangs on both sides.
Install Center Walls and Mid Shelves
Cap the Center Cube
Mount Upper Divider and Top Shelf
Get the full plan: all 5 steps and every cut length.
Download TimberLab and open Geometric wall shelf in the catalog to get every cut length and end-cut angle, all 5 assembly steps in 3D, and Timbo, the AI build helper. Catalog plans are free to open; some features, such as AI edits, require a subscription.
Hang it from wall studs, or with anchors rated for the load, and check that it is level before you load it.
Change the size or design
This plan is one of the projects in the TimberLab app’s catalog. In the app you can turn the model in 3D, follow the assembly steps one part at a time, and ask for changes in plain words, such as “make it 6 inches shorter” or “add a shelf”. The cut list and shopping list update to match the new design.
Questions about this plan
How much lumber do I need to build this geometric wall shelf?
The shopping list calls for 2 × 1x6 at 8 ft. It groups every cut onto standard board lengths and leaves room for saw cuts and trimming the board ends.
How big is the finished geometric wall shelf?
It is 24″ wide, 24″ tall, and 5 ½″ deep.
What tools do I need?
You need a tape measure, pencil, speed square, drill, eye & ear protection, miter saw, clamps.
Can I change the size of this geometric wall shelf?
Yes. Open the geometric wall shelf in the TimberLab app and describe the change in plain words, such as “make it 6 inches shorter”. The 3D model, cut list, and shopping list update together.
Where can I get the full geometric wall shelf plan?
The full plan, with every cut length and all 5 assembly steps in 3D, is free in the TimberLab app. Download TimberLab on the App Store and open the geometric wall shelf in its catalog.
