Universal Door Retainer Bracket

This compact 3D-printable bracket is designed to keep doors securely closed using a simple and reliable mechanical retention system.

It is especially useful for doors equipped with basic hinges that tend to open on their own due to vibration, misalignment, wind, or slight inclination. The mechanism provides enough holding force to keep the door closed while still allowing easy manual opening.

Besides its primary use as a door retainer, the design can also function as a light-duty door stop depending on the installation position.

Features

• Keeps doors securely closed
• Simple and reliable mechanism
• Easy to print
• Low material consumption
• Compact design
• Suitable for cabinets, utility doors, enclosures, and DIY projects

Recommended Print Settings

• Material: PLA, PETG, or ABS
• Layer Height: 0.20 mm
• Infill: 40–60%
• Walls: 3–4 perimeters
• Supports: Minimal or none depending on orientation