What is the reason to wait 12 hrs between smoking the same pipe?

[ApexAZ]

Originally Posted by The.Sheepdog

I understand. No reason I cant use the same pipe twice however. Thanks.

I've done it in the same day, but not back to back bowls. Usually after several hours. I dont know if it could hurt the pipe. I think it's mostly about the moisture affecting the flavor, but someone with more experience should chime in in case it could damage the pipe.