I built my own Turntable and here are the results

"the tighter the coupling between the arm and the bearing of the platter, the better."

Completely agree. I firmly believe the bearing/platter and tonearm should vibrate in unison if any vibration occurs at all. I think this is the one area Red Point and Galibier turntables differ in a major way. Admittedly, a separate tonearm pod has a more macho look and more convenient for transport.

Galibier tables don't have detached armboards. In my conversations with Thom I believe that even the Redpoint armpods are bolted to the plinth.

Hiho, Lewm,
very much agreed to say it again.
In fact some designers speak about 'closing the loop' (of resonance) and I guess just what Hiho mentioned.
Axel

What I meant is that Red Point and Galibier are different from each other. Red Point uses a separate armpod and Galibier uses a cantilevered armboard attached to the base. I did not mean both brands are different from the DIY turntable. Sorry for the confusion.

Personally I prefer the Galibier approach.

First of all, I could probably never make anything this nice. Liguy deserves all credit for his craftsmanship. I am only remarking about a design element that is in fact seen also in the commercial marketplace, apparently with Redpoint turntables and also for sure in the largest most expensive Kuzma turntable, where the airbearing tonearm sits on its own discrete and very massive pod. Possibly Simon Yorke turntables are also built like the one shown, but I can never see quite whether the tonearm pod is coupled to the main chassis in photos of Simon Yorke products. For the reasons I cited above, I don't agree with the de-coupled approach. I am not saying it's "wrong".