Using lamp oil, I make many coats an hour or so apart, sometimes another couple coats the next day. I allow it to stay by itself at LEAST one full day, sometimes two. I glue the rubber to the blade and put it in my home-made press capable of some serious pressure. I let it stay in my press as long as I can, minimum of one hour, overnight if possible.
Tuning a rubber isn't a quickie operation.
I just tuned a sheet of discarded Bryce and slapped it on an old Primorac Carbon. Dude that thing simply lands everything, especially counterloops.
For the record, I use new rubbers on my main bats, all 4 of them and the bats I use that are laying around or for the Army camp lunch play, I experiment with how to tune old useless stuff.