I only pull the stems when a pipe needs a good cleaning, upkeep and maintenance. Not after every
bowl, and in some cases, not after many bowls. I'm gentle on my pipes, since I have a rather expansive
rotation, not like some Forum's members, but pushing sixty pipes, all of which get smoked. For new
smokers, let me add, I let the pipe cool completely before pulling stems. I obey the old advice about only
turning it one way, so I don't absentmindedly twist it back and forth and crack the shank or do other damage.
I am not one of these people who removes the stem every time I show a pipe to another pipe smoker, or
nervously just handling pipes. If you have a good cleaning regime otherwise, you don't need to pull the
stems often.