Heavy Duty L-Corner Brackets | M4 Set

This set features robust "L-shaped" plates (corner braces) designed for reinforcing 90-degree angles. They are the essential final piece of my heavy-duty structural connector series.

Like the T and Cross versions, these are built to be structural. With a 4mm thickness and 20mm width, they offer excellent rigidity for squaring up frames, repairing furniture corners, or building custom enclosures.

Specifications:

• Shape: L-Bracket / 90° Angle
• Arm Width: 20mm
• Thickness: 4mm (Heavy Duty)
• Hole Diameter: 4.5mm (Fits M4 screws/bolts)

The Set Includes:

• Small L-Plate: 3-hole configuration for compact corners.
• Medium L-Plate: 5-hole configuration for standard joints.
• Large L-Plate: 7-hole extended version for maximum support.
• Slotted Versions: Featuring oblong slots for adjustable positioning before tightening.

Applications:

• Squaring 3D printed frames.
• Reinforcing corners of wooden boxes or shelves.
• Mounting perpendicular components.

Printing Instructions:

• Material: PETG, ABS, or ASA strongly recommended.
• Infill: 100% (Solid) around the holes prevents crushing.
• Orientation: Print flat on the build plate.

Design by Mateusz Tokarz on MakerWorld (license: BY).