Beginners Guide to Powder Coating
- You can perform the powder coating process on aluminium, cast iron, steel, stainless steel, nickel, brass bronze, copper, gold and copper, gold, brass, bronze and chrome-plated metals. As with all paint application processes, preparing the surface you want to powder coat is key to getting the best possible result. Corrosion and loose paint must be removed and the surface must be clean and free of grease, before you start the powder coating application.
- Any parts of an item that you do not want to be powder coated must be masked off with a high-temperature tape. Large areas can be masked off with aluminum foil. Holes that you do not want filled with powder coating should be sealed with high-temperature silicon plugs. Kits contain electrostatic spray guns that do not require connection to an air compressor. The powder is sprayed onto the surface with gentle, even backward and forward strokes until an even coating has been achieved.
- Unless you have the luxury of being able to install a dedicated oven in your garage or workshop, you will use the oven in your kitchen for the curing process. Curing takes place at 400 degrees Fahrenheit. When you place your items into the pre-heated oven, ensure that you clean off any powder that gets on the oven racks or oven surfaces before it heats and sets in place. The powder coating will "flow out" or liquidize and set in 20 minutes.
- The durability of a powder-coated surface means that it is not quite as easy as paint to remove. Abrasive blasting is one of the most efficient ways to remove the coating. Benzyl alcohol also works well. Steel wool will remove a fine coat of powder-coating, but it is a time-consuming process.