Used them to make a 4ft frame for an artist canvas. The cross is bent. Everything else is a combination of wood glue and self-tapping screws. I later added gussets in the corners. The positioning squares did exactly what they were supposed to do until the glue dried. The frame came out perfect. Remember these are not machinist squares so do not rely on them when setting up tools for precise cuts. They are more than sufficient for assembly work and I can recommend them.