When first starting on my pipe journey many moons ago, I was lucky to have several true pipe B&M shops in my hometown. All had in house makers that gave me tips on picking out a good smoker. I always carried a pen lite to examine the bowl.
Tips: The draft hole should be flush with the bottom of the bore : wet bottom
The stem tenon should have no space between the shank drill hole : moisture condensation.
Always pass a thin pipe cleaner to test that the stem alignment to the shank drill : poor draw.
Check for sand pits and cracks inside the bowl: burnout
I always check out these potential problems in a shop especially with the rising cost of quality pipes. It may look odd to the seller but who cares, it is your lunch money !
Tips: The draft hole should be flush with the bottom of the bore : wet bottom
The stem tenon should have no space between the shank drill hole : moisture condensation.
Always pass a thin pipe cleaner to test that the stem alignment to the shank drill : poor draw.
Check for sand pits and cracks inside the bowl: burnout
I always check out these potential problems in a shop especially with the rising cost of quality pipes. It may look odd to the seller but who cares, it is your lunch money !