Description
Two vertical and horizontal base pieces form the main L-shape.
Two diagonal pieces are mitered (cut at an angle) to reinforce the corner joint.
One small triangular filler completes the inside corner where the diagonals meet.
Observations:
The cuts appear precise, likely made with a miter saw or similar tool.
This type of joint is often used for:
Frame making
Corner strengthening
Decorative woodworking projects