When cleaning a new pipe, use pipe cleaners frequently but cautiously. Running them all the way down into the bowl may peel away the new cake before it has a chance to set.
Rest your pipe at least a full day after smoking it. Give the accumulated oil and moisture a chance to dry out. After cleaning your pipe, it's a good idea to leave a pipe cleaner in the stem and shank for a little while to absorb excess moisture. Be sure to set the pipe at the proper drainage angle, with the bowl lower than the stem. Your reward will be a dry pipe that smokes cooler and sweeter.
Rotate your pipes. Owning and smoking a number of different shapes and
styles of pipes will put more variety and interest in your pipe smoking, and
will give each pipe a chance to completely dry out. If your pipe begins to
taste harsh or bitter, dip a nylon shank brush into pipe sweetener or grain
alcohol and follow through with a dry pipe cleaner.