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Grade of sandpaper to sand down wings on TT blade? Hi everyone, I'd like to sand down the wings of my Butterfly Petr Korbel JP slightly to match those of my OSP Virtuoso and Nittaku Acoustic which I find much more comfortable. What grade of sandpaper do you recommend I use? Any additional tips...

I play at my local club and have decided to volunteer to teach table tennis to my daughter's school class of about 40 teenagers (I'll only be teaching small groups at a time). They have a great table which hasn't had much use, but they need some paddles. The question: what would everyone...