Powdercoating is an alternative to painting a pedal or other project. A dry powder is applied to a metal surface that has an electrostatic charge and the powder adheres to the metal. It is then heated to melt the powdered pigment into a hard durable surface that is like a skin on the metal.
The powdercoated layer is many times thicker than a paint coating and more resistant to chips, cracks or other damage. It is an excellent surface treatment for a stompbox.
Powdercoating requires special equipment to apply and the technique is different from using a paint spray can. Fortunately there is an excellent free manual available online: