I’ve been contemplating this for quite awhile. Then Bruce Chandler came out with his turntable article and I decided “Now was the time”. I liked his idea for the turntable pit so I based mine somewhat on his plan. The turntable itself is loosely based on the gallows turntable at the Orange Empire Museum in Perris, Ca.
I used 1/2’ square redwood to construct the turntable witha 6’ lazy susan base.
The pit itself has a Hardibacker base with styrene walls that have been filled with styrofoam with a topping of vinyl patching cement.
Still have a bit of work to do on it.