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Chunky Floating Shelf[8/4 · 4ft · 5-Pack]
One pack. One build. All 5 boards used. • Makes 2 floating shelves
Shop Black Walnut 8/4 · 4ft Pack Shop All Speciesselect 4' Lengths / 4-6"
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.
A solid 1¾"-thick floating shelf that looks far more expensive than it is. Two thick boards edge-glue into a deep, chunky top. A cleat ripped from the fifth board screws into the studs and tucks under the back edge, so there are no brackets to see. Wood plugs hide the screws on top. One 4ft pack makes two shelves.
Quick Build — for experienced woodworkers
| Part | Qty | From | S4S size | S2S size |
|---|---|---|---|---|
| Shelf boards | 4 | Boards 1–4 (2 per shelf) | 46" × 4" × 1¾" | 46" × 3½" × 1¾" |
| Wall cleats | 2 | Board 5, ripped in half | 44" × 1 15/16" × 1¾" | 44" × 1 11/16" × 1¾" |
Shelf: two full-width boards edge-glued, long grain to long grain, 46" long.
Cleat: board 5 ripped in half, 44" long, stood on edge under the back of the shelf and screwed into every stud with #10 × 3½" screws (or 4" structural screws).
Shelf to cleat: 5 × #10 × 2½" flat-head screws down through the shelf, ⅜" counterbores, glued plugs. No glue — the shelf can come off later.
Finished size: S4S 46" W × 8" D × 1¾" thick · S2S 46" W × 7" D × 1¾" thick. The cleat sits 1" in from each end, under the back edge.
Before You Start
Shopping List
- 1 lumber pack — 8/4 · 4ft (S4S or S2S)
- Wood glue (Titebond II or III)
- 6 × #10 × 3½" wood screws, or 4" structural wood screws — 1 per stud per cleat
- 10 × #10 × 2½" flat-head wood screws
- 10 × ⅜" face-grain wood plugs (or cut your own with a plug cutter)
- Sandpaper 120 / 180 / 220
- Finish: wipe-on oil, hardwax oil or water-based poly
Tools
- Saw for crosscuts (mitre saw or circular saw with a speed square)
- Saw for rips (table saw, or circular/track saw with a guide)
- Drill/driver, countersink bit, pilot bits
- ⅜" Forstner or brad-point bit
- Flush-cut saw
- 4–6 bar clamps, 12" or longer
- Cauls (straight scrap strips)
- Stud finder, 48" level
- Random-orbit sander or sanding block
- S2S only: jointer, straight-line rip jig or hand plane
S4S or S2S? S4S boards arrive flat and square on all four sides — cut and build. S2S boards have rough edges you straighten first. No jointer? Choose S4S.
Our sizing assumptions: ⅛" per saw cut · S4S boards 1¾" × 4", ¼" to square an end · S2S boards trimmed ½" each end and ¼" off each rough edge (3½" clean); we plan S2S 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
S4S Lumber Pack
Surfaced 4 sides — no jointing
- 1 Pair the boards. Boards 1 + 2 make Shelf A and boards 3 + 4 make Shelf B. Match colour and grain, and put the best faces up. Board 5 becomes the two wall cleats.
- 2 Check the glue edges. Lay each pair side by side and push the edges together. No light should show along the 46" seam. If it does, joint or plane the edges until it closes.
- 3 Glue up the shelves. Edge-glue each pair into a 8" × 46" panel, long grain to long grain. Clamp every 8–10", alternating over and under, with cauls at the ends to keep the faces level. Leave overnight.
- 4 Cut the cleats. Rip board 5 down the middle into two strips, 1 15/16" × 1¾". Square one end and crosscut each strip to 44".
- 5 Flatten and square the shelves. Scrape off the dried glue and sand or plane the seam flush. Trim both ends square so each shelf is 46" long.
- 6 Drill the shelves. On the top face, draw a line ⅞" in from the back edge — the centre of the cleat. Mark 5 holes on it: 3" from each end and 3 evenly between. Drill a ⅜" counterbore ⅜" deep at each mark, then a 3/16" clearance hole through.
- 7 Sand and finish. Ease the edges, then sand 120 → 180 → 220. Finish the top, bottom and back of each shelf equally, and the cleats too. An even finish keeps the shelf from cupping.
- 8 Hang the cleats. Find the studs and draw a level line 1¾" below where you want the top of the shelf. Stand a cleat on edge, 1 15/16" tall, with its top on the line. Pre-drill and drive one #10 × 3½" screw (or a 4" structural screw) through the cleat into every stud it crosses.
- 9 Screw the shelf down. Set the shelf on the cleat, back edge tight to the wall, with 1" past the cleat at each end. Drill ⅛" pilot holes into the cleat through the shelf holes, then drive #10 × 2½" flat-head screws.
- 10 Plug the holes. Glue ⅜" wood plugs into the counterbores, grain running the same way as the shelf. Saw them flush, sand smooth and touch up the finish.
S2S Lumber Pack
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). S2S boards finish 1¾" thick, so screws and some sizes change — use the sizes in this column.
- 2 Pair the boards. Boards 1 + 2 make Shelf A and boards 3 + 4 make Shelf B. Match colour and grain, and put the best faces up. Board 5 becomes the two wall cleats.
- 3 Check the glue edges. Lay each pair side by side and push the edges together. No light should show along the 46" seam. If it does, joint or plane the edges until it closes.
- 4 Glue up the shelves. Edge-glue each pair into a 7" × 46" panel, long grain to long grain. Clamp every 8–10", alternating over and under, with cauls at the ends to keep the faces level. Leave overnight.
- 5 Cut the cleats. Rip board 5 down the middle into two strips, 1 11/16" × 1¾". Square one end and crosscut each strip to 44".
- 6 Flatten and square the shelves. Scrape off the dried glue and sand or plane the seam flush. Trim both ends square so each shelf is 46" long.
- 7 Drill the shelves. On the top face, draw a line ⅞" in from the back edge — the centre of the cleat. Mark 5 holes on it: 3" from each end and 3 evenly between. Drill a ⅜" counterbore ⅜" deep at each mark, then a 3/16" clearance hole through.
- 8 Sand and finish. Ease the edges, then sand 120 → 180 → 220. Finish the top, bottom and back of each shelf equally, and the cleats too. An even finish keeps the shelf from cupping.
- 9 Hang the cleats. Find the studs and draw a level line 1¾" below where you want the top of the shelf. Stand a cleat on edge, 1 11/16" tall, with its top on the line. Pre-drill and drive one #10 × 3½" screw (or a 4" structural screw) through the cleat into every stud it crosses.
- 10 Screw the shelf down. Set the shelf on the cleat, back edge tight to the wall, with 1" past the cleat at each end. Drill ⅛" pilot holes into the cleat through the shelf holes, then drive #10 × 2½" flat-head screws.
- 11 Plug the holes. Glue ⅜" wood plugs into the counterbores, grain running the same way as the shelf. Saw them flush, sand smooth and touch up the finish.
Why a cleat on edge? Standing the cleat on edge puts its full height under the shelf and gives the stud screws 1¾" of solid wood to pass through. Set 1" in from each end and tucked under the back, it all but disappears.
Why no glue on the cleat? Screws alone hold the shelf, so you can unscrew it to move or refinish it. The shelf and cleat grain run the same way, so nothing fights the seasons.
Why studs? Every time you set something on the front edge, the shelf levers on the wall. Screws into studs take that load. Drywall anchors pull out.
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
- Two-tone: glue a walnut board to a maple board for a striped shelf.
- Brass screws: skip the plugs and use brass or black screws in the counterbores for an industrial look.
- Bathroom shelf: cut one shelf to 22" for over the toilet, with a 20" cleat. Use a water-resistant finish.
Safety and Care
- Wear eye and hearing protection. Use a push stick for every rip under 4" wide.
- Mount into wall studs (or rated anchors sized for the load). Check for wires and pipes before drilling.
- Load each shelf to about 25 lb — books, plants and frames. Never use it as a step or a seat.
- Pre-drill every screw — hardwoods split without a pilot hole.
Frequently Asked Questions
Not for S4S boards — they arrive flat and square on all four sides. S2S boards need their edges straightened: a jointer, a table saw with a straight-line jig, or a hand plane all work. No jointer? Choose the S4S pack.
About 25 lb per shelf when the cleat is screwed into at least two studs. Keep the heaviest things close to the wall.
The 44" cleat still crosses two studs at 24" centres. If the shelf must go where there is only one stud, use rated heavy-duty wall anchors in the other holes and load it lighter.
Yes. Drill a small hole in each plug, pry it out, and back out the screws. The cleat stays on the wall. Glue in new plugs when you rehang it.
Planned offcuts only: about 1" off the end of each shelf board and about 3" off each cleat strip. All 5 boards go into the shelves.
Yes. A 2ft 8/4 pack makes two 22" shelves the same way, with 20" cleats. A 20" cleat crosses two studs at 16" centres.
