The soapstone im referring to is a steatite , a form of talc ..... and not a fancy plastic. The stone is odd in that it is Very dense but very soft, you can carved with a knife. It is made up mostly of talc and a few minerals and looks a little like gray to greenish marble. It is also used for counter tops, sinks, carving/ sculpting, thermal mass in stoves and bed warmers in the past. If you hold up a slab and give it a rap, it just goes thud and appears to have little to no resonance of its own.
Twl, I just bought a OL silver arm and in waiting for it to arrive . It will go on my P25 for now and some time in the next six months or so i will buy a platter, bering, and motor from Teres and build my one plinth. Im thinking of using a soapstone, acrylic, lead, depleted uranium, MDF, aluminum, balsa, cocobolo, titanium, sorbothaine, carbon fiber sandwich plinth, suspended by magnets in a sealed chamber filed with argon!! ......after all i have read im sure this is the only way to go. .....
Seriously .. seeing as you have built a Teres, can you easily remove the platter bering so that i can engage in some plinth swapping experiments?