I shouldn't have mentioned heating; it was just as an aside.

I've done a bit of it... for instance, to fit a lathe chuck to a recess in a back plate, where pressing it in isn't really practical, and where a very high degree of precision in the form of concentricity is desired, the SOP is to freeze the chuck and heat up the machined-to-fit backplate in the oven. Resulting in a tight slip fit. Once the temperatures normalize, them suckas are mated together to a very high degree of concentricity. Then bolts carry the shear load between the two. Anyway.

Great discussion going and I appreciate those in the know sharing their experience. Thank you!!