Powder-coating lets you give jewelry made of any type of metal a sleek new finish. While powder-coating costs more than simply spray-painting the jewelry, it will produce a more professional result. You will need to purchase a powder-coating kit and have access to an oven that is not used for preparing food.
Obtain a conventional oven that you can use just for powder-coating. A toaster oven may be large enough for small jewelry items. Used ovens may be available online for a lower price. Check with a local appliance store to see whether they have any traded-in ovens to sell or give away.
Place your jewelry on a plastic tarp or on newspapers to protect your work surface.
Heat the oven to 400 degrees. Make sure you are working in a well-ventilated space; open windows or do the project outside if possible.
Load your desired color of paint into the cup holder of the powder-coating gun.
Aim the powder-coating gun, holding it about 6 inches to 1 foot away from the jewelry. Coat the jewelry evenly with paint.
Transfer the jewelry to the oven using tongs and let it cure for 15 minutes. Remove it from the oven and let it cool.
Wear protective gloves and safety goggles. Cover your mouth and nose.
Do not use the same oven for cooking and powder-coating, as the paint chemicals could contaminate food.