This 3D printed right-angle test bar is a simple yet practical tool designed to check the squareness of corners and joints. Featuring a precise 90-degree L-shaped structure, it allows users to quickly verify whether two surfaces meet at a perfect right angle. The reinforced edges provide added rigidity, helping maintain accuracy while remaining lightweight and easy to handle. Its compact size makes it convenient for woodworking, DIY projects, furniture assembly, or general alignment checks. The clean geometry and visible 3D print layer lines highlight its functional, custom-made character, making it a handy addition to any workshop or home toolkit.