I have the same turntable as you, but I have the turntable extender from sugarworks to go on top. It extends your turntable to 20". It also holds a lot of weight. I got it from a cake show and the inventors said they stood on it without breaking it. I hope that helps. http://www.sugarworks.com/products/turntable-expander
Mommadecakesbylenna.com
