Here is a trick that pipe (smoking pipe) makers use with Carnuba wax. Almost all pipes are finished with Carnuba . First run your buff at a high speed, (you can go 4,000 rpms) you need the speed to melt the hard stick of Carnuba onto the buff. You will see it on the buff. THEN, (someone else gave me this advice and it works) buff it on at a lower speed, between 750-1500. I have found that around 1,000 rpms (my lathe does 1250)I get a good shine. You will get a better shine and more Carnuba at this lower speed. I've done this with my pipes and it works. Stick Carnuba is like a little stick of plastic, it's hard, so the friction-heat from the fast speed melts it onto your buff.
Good luck.