pennsyscot wrote: One area I'm having difficulty with is removing the
drill marks from the inside of the stem. How important is it to remove
drill marks from the inside of a rubber stem? Will drill marks effect the
smoking properties of the pipe? I've tried the pipe cleaner with tripoli
in the dremel
I just realized that I blew completely past this question.
Contrary to popular belief, you do not need a polished ariway to make a pipe smoke extremely well. If there are burrs or flashing inside the airway, then that's another issue, but little swirl marks from the drill bit won't affect the smoking properties in the least.
Just make sure you use a sufficiently large drill bit, that your slot is open and appropriately veed, and that you smoothed out any irregularities in the slot with a needle file. If your tools are sharp, then the surface left behind will be naturally smooth.
If you're making a clear acrylic stem, then the rules change somewhat, since the airway is readily visible from the outside. In this case, just to make it look better, you should polish the interior airway - but this is such a huge time-sink, and such a pain in the butt, that I really don't use clear stems.