When pressing rosin, will the resulting texture va...

to be honest, pressing is not easy at all. as you said, heat, pressure, and micron bag size affect a lot, but also the strain you're playing with, the heads of the trichomes, the drying and separation of those heads from the material. if you can, run 2-3 different ways to see the results: even a small change can add more flavour to your extraction! good luck !!!