The main limitation is the size of the component to be powder coated for handling purposes and whether it will fit inside the curing oven. To enable the powder to be applied, the component needs to be hung from a frame, so if there are no hanging points on the component itself, small hanging holes will need to be made in the component to enable it to be hung for painting. In addition, powder coating does not hide poor surface conditions very well, such as rust, oil contamination and dents/scratches.