I reamed one of my favorite pipes (one that gets smoked multiple times a day) back to wood once, and noticed that the tobacco did not taste as good. So, for me at least, I’d agree that at least a thin layer of cake is a good thing for flavor. I saw the thread that said a cakeless pipe should smoke cooler and better. I can’t say the reasoning is bad, but I can’t deny what I taste, either. Maybe there’s more to it than just temperature.Question about using a towel to wipe out the chamber after every smoke and thereby keeping the cake at ammonium. I found cake to add flavor, although I could be wrong. Some go so far as to say to never clean your pipes, as the reside adds flavor.
On the practice of wiping the bowl out, I recently began doing this, and the cake still builds up, albeit slower. What I’ve seen is it helps make a more solid cake, though. Have you ever had a chunk of cake get loose and fall out? Maybe when trying to give a thick cake a gentle ream to make a little more room in the chamber? Wiping it out often with a paper towel seems to prevent all that. At least so far. Like I said, I just started experimenting with that.
As for cracking, I’ve only ever had one pipe crack, a morta, which I think had an internal issue with a naturally weak spot in the grain.