Wow, I'm totally drawn in just by reading. I've never tried chinese rubber before, but here I am just finished gluing a new B3. I figured I have a task to break the rubber in, so wish me luck and patience guys 😄
I thought all Chinese rubbers would be sticky, but the B3 sheet I got wasn't as tacky as I had previously imagined. It still sticked to the initial plastic sheet, but it couldn't lift the ball. Is this what you guys meant by elastic topsheet? Or my sheet was probably just old already?
Wow, well B3 is a hard switch for someone coming from grippy Japanese or German rubbers but hang on. Not the hardest switch tho since B3 is not too slow like some other sticky Chinese rubbers. Like you get an old PF4 and hemorrhoids with it as you try to get the ball over the net from 2 meter away.
(I still think a Big Dipper 38 deg is a great gateway rubber for someone transitioning from Eur/Jap to Chinese) It kind of has a clicky feeling like "Tenergy" but also is properly a sticky rubber.
By elastic topsheet I personally mean that the top rubber stretches as it contacts with the ball and then returns to its original shape fast. Many other Chinese rubbers don't stretch easily, they have a hard rubber topsheet and that makes weak strokes difficult/unpredictable. I don't have this issue with B3.
Also this property comes handy during serving since you can't really serve with huge impact, just slight touches and swipes etc... and the topsheet adds a lot of spin to the ball, it's deceiving.
Same with open up loops, sometimes I do a super weak open up and the opponent is very surprised how much spin the ball has. It's very deceiving since they just try to casually block it back but the almost always block long and they can't get what is happening.