I bought a Peco turntable kit a couple of years ago with the hope of converting it to look somewhere in the ballpark of the turntable that was at Kent station Cork. Its very over scaled and a bit toy like but a good starting base for a bit of kit bashing.
The support girders are the wrong shape so required a bit of chop and paiste.
The turnatable well is far too deep so required building up the base. I also had to swop the over size wheels for something closer to the correct scale.
I used card to build up the levels, and some old hornby set tract