In my cake decorating business I went thru several cake turntables, plastic, metal, and ceramic.
They were either too small, broke, and one squeaked like my brakes!
I finally broke down about two years ago and had a cake decorating turntable custom made just the right size that would last.
The heavy duty turntable worked so well I made an agreement with the company to make as many as my friends and fellow cake decorators needed at a special price of $79, normally $99, for the 18" lazy Susan turntable.... plus shipping:)
The wood measures one and a quarter inches thick for both the base and the top.
The smallest one measures 18 inches, which holds my large and small cakes.
We also have a 24" and a 36" lazy Susan perfect for the table.
These wood turntables will hold up to 1,000 pounds and I put my SUV on it just to test that!