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A full-length 2x4-framed sofa with four hidden drawers and a pipe-rail back. Big, boxy, and heavy — but every board is a straight cut.
| Part | Qty | T × W × L | Material | ✓ |
|---|---|---|---|---|
| Arm frame verticals | 4 | 1 1/2" × 3 1/2" × 24" | 2x4 | ☐ |
| Arm frame long members | 4 | 1 1/2" × 3 1/2" × 31 1/2" | 2x4 | ☐ |
| Arm end cladding Plus 4 x 1x6 @ 24" to fill — mix as needed to cover the arm ends. | 16 | 3/4" × 7 1/4" × 24" | 1x8 | ☐ |
| Arm cladding 1x6 | 4 | 3/4" × 5 1/2" × 24" | 1x6 | ☐ |
| Arm top 1x6 | 2 | 3/4" × 5 1/2" × 36" | 1x6 | ☐ |
| Seat frame cross members | 10 | 1 1/2" × 3 1/2" × 9" | 2x4 | ☐ |
| Seat frame long rails | 4 | 1 1/2" × 3 1/2" × 102 1/2" | 2x4 | ☐ |
| Back frame long rails | 2 | 1 1/2" × 3 1/2" × 102 1/2" | 2x4 | ☐ |
| Back frame studs | 3 | 1 1/2" × 3 1/2" × 21" | 2x4 | ☐ |
| Back panel Splice over the center stud; two pieces 24" x 51-1/4". | 1 | 1/4" × 24" × 102 1/2" | 1/4 in plywood | ☐ |
| Angled back boards Both ends cut parallel at 15° off square, long-point to short-point. | 14 | 3/4" × 7 1/4" × 12 3/4" | 1x8 | ☐ |
| Back retaining strip Can be spliced from 8-ft stock. | 1 | 3/4" × 1 1/2" × 102 1/2" | 1x2 | ☐ |
| Top trim | 2 | 3/4" × 2 1/2" × 102 1/2" | 1x3 | ☐ |
| Front trim | 1 | 3/4" × 5 1/2" × 102" | 1x6 | ☐ |
| Drawer sides | 8 | 3/4" × 5 1/2" × 23 3/4" | 1x6 | ☐ |
| Drawer fronts/backs | 8 | 3/4" × 5 1/2" × 26" | 1x6 | ☐ |
| Drawer bottoms | 4 | 1/4" × 23 3/4" × 26" | 1/4 in plywood | ☐ |
| Drawer faces (wide) | 2 | 3/4" × 9 1/4" × 25 5/8" | 1x10 | ☐ |
| Drawer faces (narrow) | 2 | 3/4" × 9 1/4" × 25 1/8" | 1x10 | ☐ |
| Item | Qty | ✓ |
|---|---|---|
| 2x4, 8 ft Arm and drawer framing. | 4 each | ☐ |
| 2x4, 9 ft (or 9 ft stud) The 102-1/2" seat and back rails come out of these. | 6 each | ☐ |
| 1x8, 8 ft Arm cladding and the angled back boards. | 6 each | ☐ |
| 1x6, 8 ft Cladding, drawer boxes, and drawer faces. | 9 each | ☐ |
| 1x3, 8 ft Top trim. | 3 each | ☐ |
| 1x10, 10 ft Drawer fronts/backs. | 1 each | ☐ |
| 1x2, 10 ft | 1 each | ☐ |
| Plywood, 1/4 in, 4x8 sheet Drawer bottoms and the back panel (if the back is against a wall). | 1 each | ☐ |
| Drawer slides, 26 in Full-extension side-mount. Buy all four the same brand and model. | 4 pair | ☐ |
| Self-tapping wood screws, 2-1/2 in SPAX or similar — for the 2x4 frames. | 1 box | ☐ |
| Self-tapping wood screws, 2 in For attaching frames to arms and back. | 1 box | ☐ |
| Brad nails, 1-1/4 in | 1 box | ☐ |
| Wood glue | 1 bottle | ☐ |
| Black iron pipe fittings and nipples, 1/2 in 7 flanges, 5 elbows, 2 tees, plus the cut nipples listed in the plan. Buy pre-cut/threaded lengths. | 1 set |
Tools: Brad Nailer, Drill / Driver, Miter Saw, Speed Square. Materials: 2x4, 8 ft, 1x8, 8 ft, 1x6, 8 ft, Self-tapping wood screws, 2-1/2 in, Brad nails, 1-1/4 in, Wood glue
Build two rectangular 2x4 frames for the arms with the 2-1/2" self-tapping screws. Check each for square before the screws go tight — an out-of-square arm throws the whole sofa off.
Clad the outside faces with 1x8 and 1x6 boards using glue and 1-1/4" brad nails, then add the 1x6 trim to finish the edges. Set both arms aside.
Tools: Drill / Driver, Miter Saw, Speed Square. Materials: 2x4, 9 ft (or 9 ft stud), Self-tapping wood screws, 2-1/2 in
Build the two seat frames from the 102-1/2" rails and the 9" cross members, using the 2-1/2" screws. These frames carry the drawers, so they must match each other exactly. Lay them side by side and confirm the cross-member spacing lines up frame to frame before you move on. A frame that's out of parallel means a drawer that binds later.
Tools: Brad Nailer, Circular Saw, Drill / Driver, Speed Square. Materials: 2x4, 9 ft (or 9 ft stud), Plywood, 1/4 in, 4x8 sheet, Self-tapping wood screws, 2-1/2 in, Brad nails, 1-1/4 in, Wood glue
Build the back frame from the two 102-1/2" rails and three 21" studs, checking for square and using glue with the 2-1/2" screws.
| ☐ |
| Seat cushion Sized to the finished seat. Foam + fabric, or a bought bench cushion. | 1 each | ☐ |
Overall cost: $$$$. Lumber varies by region, species, and season, so we give a band rather than a figure.
If the sofa backs against a wall, splice the 1/4" plywood over the center stud (two pieces, 24" x 51-1/4") and attach with glue and 1-1/4" brads. If the back will be exposed to the room, leave it open for now — you'll clad it with 1x boards instead in the next step.
Tools: Brad Nailer, Drill / Driver. Materials: Self-tapping wood screws, 2 in, Brad nails, 1-1/4 in, Wood glue
Stand the arms up and attach the back frame to them with the 2" screws, driving from the inside where the heads won't show. If the back is exposed, add the extra 1x cladding boards now with glue and 1-1/4" brads. Check that the whole carcass sits flat and square before the drawers go in.
Tools: Brad Nailer, Random Orbit Sander. Materials: 1x8, 8 ft, 1x6, 8 ft, 1x3, 8 ft, 1x2, 10 ft, Brad nails, 1-1/4 in, Wood glue
Set the 15°-mitered 1x8 back boards inside the back opening and nail them down. Run the 1x2 retaining strip across the base of the back boards with glue and brads to lock them in place.
Trim the front and top edges of the whole sofa with 1x3 and 1x6 using glue and 1-1/4" brads. Fill nail holes and sand everything smooth before finishing.
Tools: Drill / Driver, Drill Bit Set, Miter Saw. Materials: 1x6, 8 ft, 1x10, 10 ft, Plywood, 1/4 in, 4x8 sheet, Drawer slides, 26 in, Self-tapping wood screws, 2 in, Wood glue
Build four drawer boxes from 1x6 sides and fronts/backs with 1/4" plywood bottoms, sized to fit the openings. Mount the 26" slides so each drawer front sits flush with the front edge of the 2x4 frame. If a slide won't reach because the opening is a touch wide, block inward with scrap wood — that's normal and expected on a rough-framed carcass.
Attach the 1x10 drawer faces from inside with screws and glue, predrilling so the face doesn't split. Adjust each face for an even gap before the screws go tight.
Tools: Brad Nailer, Drill / Driver. Materials: Brad nails, 1-1/4 in, Wood glue, Black iron pipe fittings and nipples, 1/2 in, Seat cushion
Lay scrap 1x boards (about 23" long) across the seat frame as slats and nail them down — they carry the cushion, so they don't need to be pretty.
Assemble the black iron pipe rail from the flanges, elbows, and tees, and screw the flanges to the back to hold it. Finish the wood, then drop in a cushion sized to the finished seat opening.