Is there any way to prevent rim darkening I have been wiping after each smoke but it doesn't seem to work, it is a little darker after each smoke lol.
Saliva and a pipe cleaner work wonders. This was 2 or 3 years worth of gunk, that I'd always assumed was permanent, until I learned the spit shine technique.If it's residue, the enzymes in saliva will often help remove the build up. It could be that your flame is actually charring the rim. Keeping the flame above the level pipe rim and drawing the flame to the tobacco will help reduce charring.