Originally Posted by
himespau
I've heard of people throwing their saddle in the oven at ~200 or so for a short while before hitting it with proofide so as to open up the pores (well it probably doesn't have functional pores anymore now that it's dead, right?) or whatever in the leather and also so the proofide is nice and runny and seeps in really well.
I doubt that the heat opens any pores in the leather, but it does make the Proofide more liquid and amenable to absorption.