A piano hinge (also called a continuous hinge) runs the full length of a joint instead of relying on two or three separate hinges, which is exactly why it's the go-to choice for toy boxes, cabinet doors, and anything where weight needs to be supported evenly across the entire edge. Most piano hinges are sold longer than you need and cut to length on site — here's how to do that cleanly and mount it so the lid or door swings true.
What’s in this guide
Why use a piano hinge instead of standard hinges
A standard butt hinge concentrates all the stress at two or three small points along the joint. On a toy box lid that gets slammed shut by kids, or a cabinet door that sees daily use, those concentrated stress points are exactly where wood eventually splits or screws work loose. A piano hinge distributes the same load across dozens of screw holes running the entire length of the joint, which is why it holds up so much longer under repeated stress and heavier loads.
It also keeps the joint rigid along its whole length, which matters on longer lids and doors that would otherwise flex or warp slightly between widely-spaced standard hinges.
What you’ll need
Piano hinges are simple hardware, but a clean installation depends on having the right basic tools on hand:
- A piano hinge sized equal to or longer than your joint (you'll trim it down)
- A hacksaw or angle grinder with a metal cutting wheel
- A metal file to clean up the cut edge
- A tape measure and pencil or marker
- A drill with a bit sized for pilot holes, plus a driver
- Clamps to hold the hinge in position while you mark and drill
- Safety glasses and gloves — cutting steel throws sharp filings
Piano hinge sizes for common projects
ALBO 12 inch Silver Heavy Duty Stainless Steel Piano Hinge 2-Pack$16.99Compact 12-inch two-pack for smaller lids and boxes; verify width, finish, and screw requirements.View product →
ALBO 16 Inch Silver Heavy Duty Stainless Steel Piano Hinge 2-Pack$17.9016-inch silver two-pack for cabinets and furniture that match this hinge length.View product →
ALBO 24 Inch Silver Heavy Duty Piano Hinge 2-Pack$24.9924-inch silver two-pack for longer joints; trim only when the project and hinge design allow it.View product →
