Mirror Finish/Buff Mirror Finish/Buff | 1 to 4 Ra
The finest mirror finish. Used mainly for finishing parts where cosmetic appearance is critical.
(Equivalent to a 1200 grit or better polish)
Light Finish/Buff Light Finish/Buff | 10 Ra
Close to a mirror polish but with less shine. Typically used on molds that produce cosmetically finished parts.(Equivalent to 600 to 1200 grit polish)
600 Grit 600 Grit Paper | 10 Ra
The highest finish before the buffing process. Mostly used on highly cosmetic parts that are to be chrome plated or painted.
400 Grit 400 Grit Paper | 10 Ra
Close to a 600 grit paper finish, but with a deeper directional pattern. Less shine than a 600-paper finish.
320 Grit320 Grit Paper | 14/15 Ra
Close to a 400 grit paper finish, but with a deeper directional pattern. Less shine than a 400-paper finish. It is typically referred to as a #4 pharmaceutical finish.
320 Grit240 Grit Paper | < 32 Ra
Close to a 320 grit paper finish, but with a deeper directional pattern. Less shine than a 320-paper finish. This finish is also sometimes called a #4 pharmaceutical finish.
180/150 Grit 180/150 Grit Paper | 33/50 Ra
Close to a 240 grit paper finish, but with a deeper directional pattern. Less shine than a 240-paper finish. This is sometimes referred to as a #4 sanitary finish.
100/120 Grit100/120 Grit Paper | 50/70 Ra
Close to a 180/150 grit paper finish, but with a deeper directional pattern. Less shine than a 180/150-paper finish. It is sometimes referred to as a #3 Architectural finish.
60/80 Grit Paper60/80 Grit Paper | 80/100 Ra
Close to a 100/120 grit paper finish, but with a deeper directional pattern. Less shine than a 100/120-paper finish. It is also called a #2 Satin finish.
Mirror Finish/Buff 36 Grit Paper | 150 + Ra
The deepest and roughest finish used to remove gating, parting lines and mill scale from metal plates, bars, tubes and castings. Usually this operation is not a finish operation as much as it is a processing operation used to prepare a part for either machining or to meet drawing requirements. It's also known as a #1 finish.