A while back I read Rick Newcombe's book where he talks about enlarging the draft hole in your pipe. So I said to myself, "Hmmm. I'm going to try that."
So, I did....I took out my trusty, cheap, no-named shop pipe, found the appropriate bit in my collection, pulled off the stem, and commenced to drilling. I kept my eye on the inside of the bowl....but the tip of the drill bit never appeared. It did, however, appear from out the bottom of my pipe....At that time I said to myself, "Well sh**. And, @#$#@&#@."
To save the pipe, I found a tap that would fit, threaded the hole, and stuck a screw in it. Once I figured out where the real draft hole was, I drilled it out as well.
I have since realized that I unintentionally created my own system pipe! Today it's my go-to, my favorite, and, sadly the least expensive pipe in my collection.
And the added benefit: My rare earth magnet holds it perfectly in place while I'm working!
I'm going to patent this thing!