The three steps for powder application are surface prep to remove contaminants, protection of sensitive areas and careful application of the product. Photos by the author.
Powder coating is a durable and protective surface treatment that has become ubiquitous in automotive and motorcycle restorations. Applied correctly, it resists UV, moisture and moderate impact. For me as a resto-guy who routinely rides my 1960s Brit bikes, it?s worth the investment.
In a process called electrostatic spray deposition, a specialized spray gun applies electrically charged powder to grounded parts. The parts are then placed in a curing oven, where the coating chemically reacts with heat to form long molecular chains with high cross-link density, making it tougher and more durable than paint. Unlike paint, powder coating does not rely on a liquid solvent or carrier fluid, so it emits few volatile organic compounds. Applied dry, it can be applied thicker without sagging or running.
Electro Tech Powder Coating in San Marcos, California, did my recent work and owner Adam Mitchell gave me the lowdown on the process and what customers can expect.
After blasting, the sensitive areas are protected with Teflon plugs or special high-heat tape.
First, all grease, oil, dirt and loose rust must be cleaned away. Greasy areas like swingarm abutments, steering necks and chain guards need particular work to avoid risk of porosity failure due to contamination. Some parts will need protection from build-up inc...