Darkening on the outside could also come from some rough handling example: The Pipe being sat down in an Ashtray when there is maybe a still smoldering match in there. That would explain dark spots on the outside without visible damage on the inside of the bowl.
Also usualy you can taste a pipe that is getting to hot as in it will taste like a campfire smells and you migth even smell some wiffs of wood burning and on the inside you can usualy also see something like the walls crumbling instead of forming a solid cake and spiderwebbing forming, similiar to what you see on charcoal left from a wood fire.
Also usualy you can taste a pipe that is getting to hot as in it will taste like a campfire smells and you migth even smell some wiffs of wood burning and on the inside you can usualy also see something like the walls crumbling instead of forming a solid cake and spiderwebbing forming, similiar to what you see on charcoal left from a wood fire.
