The front platen of an aluminum extrusion press is a critical component that directly impacts die performance. Its condition should be checked frequently using a straightedge and feeler gauge. The main concerns are looseness, cracking, or distortion, such as "coining," where a permanent impression is made in the pressure ring. If any damage is detected, the pressure ring must be repaired or replaced. In some cases, an old ring can be restored to a smooth and parallel condition through grinding and shimming.[1]