After reading all of this and needing to change the tip on my backup cue, I decided to try the Elkmaster/hammer method just for laughs. No soaking in milk or urine.
I bought a new 13mm Elkmaster at the Chinese equivalent of about $0.40, brought it home, put it in a paper towel and hammered it on each side about 40 whacks. After that it was between 13.5 and 14mm diameter. Mounted it on the cue, trimmed the edge, shaped to dime radius and burnished the edge with a piece of leather. Playing surface was "fuzzy."
Took it out for a two hour practice session tonight and DAMNED if it didn't play great. Takes chalk well, tons of spin and good control.
It may mushroom out or fall apart tomorrow, but tonight it was a real surprise.
I did this after remembering that when Ronnie Alcano was here for the IPT qualifier in June, he told me that he was using Elk Master tips. We did not talk about preparation or anything, but I decided that for the price, and after all this discussion, it was worth a shot.