Most piano hinges do NOT swing both ways.A standard piano hinge is single-acting, meaning it allows the door or panel to swing in one direction only, determined by how and where the hinge is installed.

No, hinges do not always have to be recessed. Whether a hinge is recessed (mortised) or surface-mounted depends on the hinge type, door design, load requirements, appearance goals, and clearance needs.

No, door hinges do not have to match door knobs. There is no functional requirement that hinges and knobs be the same finish, style, or material. Matching is a design choice, not a technical rule.

You can use vegetable oil on a door hinge temporarily, but it is not recommended as a proper or long-term lubricant. While it may quiet a squeak for a short time, vegetable oil creates more problems than it solves over time.

Adjustable cabinet hinges are designed so you can fine-tune door position without removing the door. Small turns of the adjustment screws correct uneven gaps, rubbing, sagging, and poor closing—common issues after installation or as cabinets settle over time.

Cabinet hinges directly affect how doors open, how they align, how long they last, and how the cabinet feels in daily use. The wrong hinge can cause rubbing, uneven gaps, limited opening, or premature wear. The right hinge delivers smooth motion, clean appearance, and reliable long-term performance.

A hinge bolt (also called a security stud or dog bolt) is a fixed metal pin installed on the hinge side of a door or gate. Its job is to prevent the door from being removed if the hinge pins are taken out or defeated. Hinge bolts are most commonly used on outward-opening doors, security doors, metal gates, and fire or industrial doors.

A cranked hinge is a hinge whose leaf (or arm) is offset rather than straight. That offset—often called the crank or bend—shifts the door sideways relative to the hinge pin and mounting surface. The purpose is to control where the door sits when closed and how it clears the frame when opening.

Gate hinges do more than allow a gate to swing. Their size directly affects load capacity, alignment, smooth movement, and long-term durability. Hinges that are too small can cause sagging, binding, or early failure, while oversized hinges may be unnecessary and harder to install. Choosing the right hinge size is about matching the hinge to the gate’s weight, width, material, and usage.

Yes, you can tighten door hinges, and it is one of the most common and effective ways to fix door problems such as sagging, squeaking, rubbing, or poor latching. In many cases, tightening the hinges is the first and simplest step before considering more complex repairs.

Yes, you can shim door hinges, and it is a common, effective method for correcting minor door alignment problems without replacing hardware or removing the entire door

Yes, you can replace door hinges without fully removing the door—but it depends on the hinge type, door weight, and the condition of the frame and screws. In many cases, especially for standard residential doors, hinges can be replaced one at a time while the door remains supported in place.