Review on Enhance your Project with MakerBeam Corner Cube Black Pcs: Robust and Versatile Building Blocks by Julio Montano

These cubes are great for making Tri-Hinges with MakerBeam profiles. They are extremely easy to use, especially if you already have pre-cut profiles. This is a great alternative to using an L-shaped connector to make a connection. The connection is fairly rigid, but it relies on only one bolt to hold each joist in place. I didn't have any problems with the joists twisting, but you might want to consider a corner bracket to reinforce them.