Typically any metal object that can hold the electrostatic charge needed to affix the sprayed powder and can tolerate the high heat levels of the curing process can be powder coated.
Typical surfaces include mild steel, galvanized and electroplated steel, aluminum, stainless steel and most other steel alloys.
Sensitive areas like threading, or clearance holes can be masked with special high temperature masking. Masking can be applied to most tolerance areas to avoid coating. We may also use high temperature silicone plugs to protect galleries, threaded holes or shafts as needed.
Plastic, resin body fillers or wood can not be powder coated. The high curing temperatures required for powder coating will wreak havoc with these surfaces.
The powder also does not bind well to the fillers surface which leads to bubbling and other surface imperfections in the paint. We recommend filling any surface irregularities with brass or welding rod.