A fascinating and interesting blog excerpt I found… enjoy.
A plate charger or dinnerware charger is the decorative plate that sits beneath the actual dinner plate. Years ago, we called these a “service plate” or “underplate” because their function was merely decorative. A charger or service plate is usually larger than a dinner plate, typically measuring between 11″ to 13″ in diameter.
Because a charger is not used for food, it can be made out of any kind of material. Plastics and metal are pretty common materials used for a charger, although leather, mother of pearl and even wood chargers are available.
To buy at the store, chargers can cost between $2 to $5 each. Target usually stocks some of the cheaper gold and silver chargers I've seen at an affordable $15-$20 per 12 count though at these prices, they tend to run out quickly.
But with a package of plastic plates and some metallic spray paint, you can make your own chargers for less money. While they won't look exactly like the ones in the store, they really quite nice and can save quite a bit of money, especially if setting up a banquet for a crowd.
Materials needed to make your own decorative charger
There's two essential items needed to complete this project; sturdy plastic or acrylic plates and cans of metallic gold or silver spray paint. For the charger, a round plate size of 12-13″ is preferable. When plates reach this size, they are often referred to as either round platters, chop platters, or hors d'oeurve platters. You should be able to find them in your town at restaurant supply stores or party store. If not, on-line etailer Instawares.com also carries large, clear platters. The 12″ rounds currently in stock is made by Waddington, and the platters are priced in quantities of 25 for $31.80
Instructions
There's two ways of spraying these plates and either method will work. For a glossy shine, the underside of the plate should be sprayed. For more of a matte finish, the top of the plate can be sprayed. It's totally up to you.
Step 1: Place the plate on a sheet of newspaper in a well ventilated area.
Step 2: Gently spray the plate following manufacturers directions. Keep in mind that it's always best to apply the paint in three (or more) light mistings instead of trying to cover everything at once.
Step 3: Let the paint dry thoroughly before using, usually a couple of days.