I am selling RETÃœL rotating platform parts: the parts RETÃœL used to include, you should buy wood parts at your country.
You could check assembly instructions here: https://static1.squarespace.com/static/5926130fd482e9754a46296b/t/5ab96817562fa74d832931f8/1522100247592/Platform+Kit+Instructions+rev+G.PDF
I’ve never used it, so it is completely new, never mounted. It is in Spain.
275€ + shipping.
Please ask if you need to know something else.