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Hardwood Shelf Corbels[8/4 Wide · 2ft · 5-Pack]
One pack. One build. All 5 boards used. • Makes 15 corbels
Shop Black Walnut 8/4 Wide · 2ft Pack Shop All Speciesselect 2' Lengths / 6-8"
How it goes together
Black Walnut
Hard Maple
Cherry
White Oak
Red Oak
Ash
Hickory
Ambrosia Maple
Sapele*
Padauk*
Purpleheart*
*Exotic — not available for shipment to US customers.
Fifteen chunky hardwood corbels with a classic cove profile — enough for seven shelves and a spare. Each one is a 7" block of 1¾" hardwood with the grain standing up, cut to shape from one hardboard template so they all match. They screw into studs and carry a shelf up to 10" deep. Every board makes three, with no glue-ups.
Quick Build — for experienced woodworkers
| Part | Qty | From | S2S size |
|---|---|---|---|
| Corbel blanks, grain vertical | 15 | Boards 1–5, three each | 7" × 5½" × 1¾" |
| Profile template | 1 | ⅛" hardboard (bought) | 7" × 5½" |
Blanks: three 7" pieces from each board, grain vertical, full 5½" × 1¾".
Profile: traced from one hardboard template — 1" straight drop at the top front, cove curve down to a 1½" deep × 1" tall foot.
To the wall: two #10 × 3½" structural screws per corbel through ⅜" counterbores into a stud, plugged.
Shelf to corbel: two countersunk screws down through the shelf into each corbel top. End grain, so screws only — no glue.
Finished size: Each corbel 7" H × 5½" D × 1¾" thick (wider boards give deeper corbels — trace the same template). Carries a shelf up to 10" deep, about 25 lb per pair into studs. About 1 lb each in walnut.
Before You Start
Shopping List
- 1 lumber pack — 8/4 Wide · 2ft (6–8" wide, S2S)
- A scrap of ⅛" hardboard, at least 7" × 5½", for the template
- 2 × #10 × 3½" structural screws per corbel (30 for all 15)
- 2 × #8 flat-head screws per corbel for the shelf, shelf thickness plus 1½" long
- ⅜" wood plugs, or a 36" length of ⅜" dowel, plus a little wood glue
- Shelf boards up to 10" deep (not in the pack)
- Sandpaper 120 / 180 / 220
- Finish: wipe-on oil or hardwax oil
Tools
- Saw for crosscuts (mitre saw or circular saw with a speed square) — with a stop block
- Bandsaw or jigsaw
- Spindle sander, drum sander bit or rasp
- Drill press (recommended) or drill guide
- Drill/driver, countersink bit, pilot bits, 3/16" and ⅜" brad-point bits
- Flush-cut saw
- Stud finder, 2ft level
- Random-orbit sander or sanding block
- S2S only: jointer, straight-line rip jig or hand plane
Why S2S only? The 6–8" wide 8/4 boards come S2S: both faces planed, edges rough. Plan on losing about ¼" per edge when you straighten them.
Our sizing assumptions: ⅛" per saw cut · 6–8" wide 8/4 S2S boards trimmed ½" each end and ¼" off each rough edge (5½" clean at the narrowest), planned at 1¾" thick · sizes drawn for the narrowest board in the pack. Wider boards give you a bigger offcut or a wider part — never a shortage.
Step-by-Step
S2S Lumber Pack (6–8" wide)
Surfaced 2 sides — straighten edges first
- 1 Prep the boards. Trim ½" off each end to remove any end checks. Joint one edge straight, then rip the other edge parallel (¼" off each rough edge is our planning allowance).
- 2 Make the template. Cut a piece of ⅛" hardboard 7" × 5½". Call one long edge the back and one end the top. Mark 1" down from the top on the front edge, and a 1½" deep × 1" tall foot at the bottom of the back. Join them with a smooth curve that sags toward the back-bottom corner, passing about 3½" from the back at 5 5/16" up, 2 11/16" at 4 9/16" up and 2 1/16" at 3½" up. Cut and sand it smooth — every corbel copies this edge.
- 3 Cut the blanks. Square one end of each board. Clamp a stop block at 7" and crosscut three blanks from each board — 15 in all. The grain runs the 7" length, so it stands up and down on the wall.
- 4 Drill the wall holes first. While the blanks are still square, drill two 3/16" clearance holes straight through each one, front edge to back edge, centred on the 1¾" thickness: 1¾" and 4¼" up from the bottom. A drill press keeps them square.
- 5 Trace and cut the curve. Lay the template on each blank, back and top edges flush, and trace the curve. Saw just outside the line with a bandsaw or jigsaw. Keep your fingers well clear of the blade at the end of each cut.
- 6 Sand to the line. Sand each curve to the line with a spindle sander, a drum in the drill press or a rasp and sanding block. Hold pairs side by side as you go and check they match.
- 7 Counterbore the wall holes. From the curved face, follow each clearance hole with a ⅜" brad-point bit until about 1¼" of wood is left behind it. The lower bore is about 5/16" deep and the upper one about 1 3/16".
- 8 Sand and finish. Ease every edge and sand 120 → 180 → 220. Wipe on 2–3 coats of oil or hardwax oil on all faces, including the back.
- 9 Hang the corbels. Find two studs 16" apart and draw a level line for the shelf. Hold a corbel on its stud, top on the line, and drive two #10 × 3½" structural screws through the counterbores into the stud. Level across to the next stud and fix the second corbel the same way. Glue ⅜" plugs into the counterbores and saw them flush.
- 10 Fix the shelf. Set the shelf on top, back edge tight to the wall. Pre-drill and drive two screws down through the shelf into each corbel, countersunk. Use a length of the shelf thickness plus 1½". The corbel top is end grain, so screws hold it — no glue.
Why stand the grain up? The top of each corbel is end grain, and end grain is strongest when it is squeezed, like a post. The wall screws cross the grain, so they can't split a piece off along it.
Why drill before cutting the curve? A drill bit skates on a curved face. Drilling the clearance holes while the blank is square keeps them straight and square to the wall. The counterbore bit then just follows the hole.
Why a template? Fifteen corbels only look right if they match. Fixing one curve on a piece of hardboard means you only draw it once, and you can sand the template until you like it before touching the wood.
Why pre-drill? Maple, oak and hickory split if you drive a screw without a pilot hole. Pre-drill every screw and countersink so the heads sit flush.
Make It Yours
- Ogee profile: draw an S-curve on the template instead of the cove — a bump at the top, a hollow below.
- Corbel bookends: glue a 6" base under a spare corbel, long grain to long grain, and it holds a row of books.
- Contrast plugs: plug the counterbores with maple in walnut corbels, or walnut in maple.
- Mantel or window shelf: two pairs under a long board make a heavy mantel or a plant shelf under a window.
Safety and Care
- Wear eye and hearing protection. Use a push stick for every rip under 4" wide.
- Cut the 7" blanks with a stop block and a hold-down. Never hold small parts freehand on a mitre saw.
- On the bandsaw, push the blank with a scrap stick at the end of each curve cut, not your fingers.
- Mount into wall studs (or rated anchors sized for the load). Check for wires and pipes before drilling.
- Each pair is rated about 25 lb spread along the shelf. Don't hang on it or use it as a step.
- Pre-drill every screw — hardwoods split without a pilot hole.
- Wear a dust mask when cutting and sanding, especially exotics (padauk, purpleheart, sapele).
Frequently Asked Questions
The 6–8" wide 8/4 pack comes S2S (faces planed, edges rough). Straighten the edges with a jointer, a table saw and a straight-line jig, a track saw, or a hand plane.
About 25 lb spread along the shelf when both corbels are screwed into studs — books, plants and dishes. Keep the heaviest things near the wall and over the corbels. For more, add a third corbel on the next stud.
Any board ¾" to 1¾" thick and up to 10" deep. With corbels on studs 16" apart, a 20"–26" shelf looks balanced. Longer shelves need a corbel on every stud they cross.
Screw one corbel into a stud and fix the other with a heavy-duty toggle anchor rated at least 50 lb, through the same counterbores. Keep that shelf to about 15 lb. Never use plastic plugs alone.
Planned offcuts only: about 1¾" off the end of each board, plus the cove cut from each corbel (our yield counts the full blank). All 5 boards go into the corbels.
Yes. A 4ft wide pack makes 30 corbels: each board gives six 7" blanks. Or make twenty taller 10" corbels (four per board) for deeper shelves — scale the template up.
