Current Projects chat and miscellany

None of this makes sense.

In Mavicese:
CD=Couche Dure, hard anodised, dark grey.
Ceramic = plasma sprayed ceramic, black (alumina + titanium for Ceramic2, not sure about the first generation but I suspect the Ti binder was the upgrade) coating on the brake surface. Some old Mavic rims had the ceramic coating over silver rims, but most are CD grey on the remaining surfaces.
SUP = Soudé Usine Process, meaning welded (as opposed to sleeved or pinned) at the rim joint. It has been applied to most higher level Mavic rims since the 1990s

Either way, these are CDs, not ceramic.
TBH, I always thought they were interchangeable - a quick google told me otherwise.