How to Build a Hidden Fold-Down Cabinet Bed
Build a space-saving Murphy-style hidden bed disguised as a stylish wooden storage credenza using gas strut pivot hardware and plywood.
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🧰 Required Tools & Equipment
- ✓ Circular saw with straight edge track
- ✓ Cordless drill and driver bit set
- ✓ Pocket hole jig
- ✓ 4-foot spirit level
- ✓ Stud finder
- ✓ Clamping squares and bar clamps
📦 Materials & Supplies
- ✓ 3/4-inch hardwood plywood sheets
- ✓ 2x4 kiln-dried framing lumber
- ✓ Murphy bed gas piston hardware kit
- ✓ 1-1/4-inch pocket hole screws
- ✓ 3-inch structural lag screws
- ✓ Wood glue
⚠️ Safety Checkpoints & Warnings
- • Wear safety glasses and hearing protection when operating the circular saw.
- • Never test the bed platform unanchored; the cabinet MUST be lagged to wall studs before releasing gas pistons.
- • Keep hands and fingers completely clear of the scissor pivot brackets during folding motion.
📋 Step-by-Step Guide (5 Steps)
Cut and Assemble the Outer Cabinet Box
Rip the 3/4-inch plywood into side panels, top header, and rear anchoring cleats according to your hardware kit dimensions. Join the top panel between the two vertical sides using pocket screws and glue, checking squareness across opposite diagonals with a tape measure. Attach the upper and lower rear 2x4 stretchers flush against the back edge.
- • A rigid, 3-sided rectangular wooden box standing upright with rear stretchers installed.
- • Both diagonal corner-to-corner measurements match within 1/16 inch.
- • Assembling the outer box out of square, causing the bed frame to bind later.
- • Forgetting the heavy-duty rear mounting cleats needed for wall attachment.
Construct the Inner Mattress Frame
Cut 3/4-inch plywood side rails and foot rail to form the inner mattress box. Reinforce the inner perimeter with 2x4 lumber running lengthwise to support mattress weight and distribute hinge loads. Join the frame corners with glue and counter-bored structural wood screws.
- • A shallow, sturdy rectangular wooden tray sized 1 to 2 inches larger than your mattress.
- • Internal corner supports flush and rigidly fastened.
- • Building the inner frame too wide, leaving no clearance for the hinge hardware inside the cabinet.
Mount the Pivot Plates and Gas Strut Brackets
Measure and mark the pivot mounting hole locations on the inside of the outer cabinet and outside of the mattress box using the hardware template. Drill pilot holes and bolt the heavy-duty pivot brackets firmly in place using machine bolts or heavy screws. Attach the fold-out leg mechanism to the foot of the inner bed frame.
- • Pivot brackets seated flush on both the outer cabinet and inner frame at matching heights.
- • Fold-out support legs swinging freely at the foot end.
- • Misaligning left and right bracket heights, causing the bed to tilt and jam when opening.
Secure the Cabinet Rigidly to Wall Studs
Locate and mark wall studs behind the cabinet location using a stud finder. Push the empty outer cabinet tight against the wall and shim underneath until level and plumb. Drive at least four 3-inch structural lag screws through the upper cabinet cleat directly into solid wood studs.
- • Spirit level bubble centered on top header and vertical sides.
- • Cabinet has zero wobble when pulled firmly forward by hand.
- • Using drywall anchors instead of drilling directly into structural wall studs.
- • Mounting against unlevel flooring without shimming the base.
Hang Frame, Connect Struts, and Attach False Front
Set the inner frame onto the cabinet pivot pins with a helper, then snap the gas pistons onto their ball studs. Lower the bed flat and fasten decorative plywood panels with faux drawer trim to the front face to disguise it as a credenza. Verify smooth opening, balanced counterweight feel, and tight uniform perimeter gaps when closed.
- • Bed closes completely flush and looks like a static cabinet with decorative hardware.
- • Gas struts support frame weight smoothly without slamming open or springing up violently.
- • Attaching the heavy front panel without verifying piston weight rating.
- • Off-center front panel causing rubbing against cabinet sides during closure.
Credit: inspired by an original tutorial by Peteson Craft — watch the original on YouTube.
Don’t have everything?
- No Circular saw with straight edge track? Standard circular saw clamped along an aluminum level or factory-edge board
- No Pocket hole jig? Corner cleats made of 2x2 solid pine glued and screwed internally