3D print an angle bracket to your own dimensions
An angle bracket does not always need to be exactly 90 degrees. The real angle, leg lengths, width, mounting points and load direction determine the useful geometry.
Measure the real angle
Do not assume a visually square installation is exactly 90 degrees.
Leg lengths
Choose enough bearing area without creating unnecessary bulk.
Screw holes
Check hole diameter, edge distance and screw-head access.
Fillets and reinforcement
Avoid unnecessarily sharp internal corners.
Print orientation
Choose orientation based on the actual load.