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 reasonable price of $69 each.... plus shipping:)
The wood measures one and a quarter inches thick for both the base and the top.
The top measures 18 inches, which holds my large and small cakes.
This wood turntable will hold up to 1,000 pounds and I put my SUV on it just to test that! So for cakes, no problem!