To quote myself from an earlier thread:
A draft hole drilled a little high should smoke fine, but maybe leave a little tobacco unburned in the bottom. A draft hole drilled too low, below the dead bottom of the chamber, is likely to gurgle and/or whistle.
Most importantly, a draft hole drilled perfectly is a sign of quality, high standards, and attention to detail.
Now, all this BS about drilling too high on purpose? Yeah, I've heard that excuse before, and it's always good for a chuckle amongst serious pipemakers.
I spoke with a local and well respected pipemaker about this. He also intentionally raises the draft hole to reduce gurgling and as he put it "who wants to smoke the last crumbs of a bowl"?
There's a right way, and a wrong way to reduce gurgle. The wrong way is to "treat the symptoms", like drilling the draft hole too high, or making "system" pipes with a sump. To use the car analogies that I am growing fond of: Let's say a car company makes a crappy engine that makes a lot of noise when it is running. As a solution to all of the noise, they decide to build earplugs into the seat's headrest rather than fix the engine. Sounds a bit silly, right?
Folks, the goal of a pipemaker should not be to trap, sump, or absorb moisture build-up. The goal should be to
not allow the build-up of moisture to happen in the first place!
The build-up of moisture negatively impacts the smoking experience by more than just the nuisance of gurgling. Consider the mechanisms involved in the two most important senses that we use to enjoy our pipes; Taste and smell. Both taste and smell are entirely dependent on our bodies interacting with compounds carried by molecules of moisture. Take dehydrated... well, dehydrated anything. What does it smell like? Nothing much? Stir water into your dehydrated whatever... Can you smell it now? You bet! It works the same with taste, but you have to dry off your tongue very well for the control test. Fortunately, when we eat dry goods, the moisture is supplied by our own mouths so that we can taste it!
So, when you smoke your pipe, the taste (which also involves the sense of smell) of the tobacco is largely, dare I say
entirely, dependent on the flavor carried in moisture molecules in the smoke.
And so it follows; What happens to the flavor of your smoke when you, intentionally or unintentionally, start to remove moisture from it? The flavor begins to diminish.
If your pipe is gurgling, you're missing out on flavor!
This is why many makers go above and beyond to ensure their pipes are designed and built properly. This is why so many makers prefer to use the term "engineering" to encompass the description of all of the tiny details that must go into a "performance" airway from bowl to button. This is why high-grade pipemakers do not incorporate stingers and *filters into their work. And this is why pipemakers roll their eyes when someone suggests that "it's just two holes in a piece of wood". All of this effort is put in to try to make sure that a minimum amount of moisture gets left behind in the pipe.All of this effort is put in to make your smoke more enjoyable!
Help me to understand this. The moisture building up is not caused by the location of the draft hole but the moisture content in the tobacco and the way I smoke. In my experience smoking too fast and too hot increases moisture.
In my experience, smoking the exact same tobacco at the exact same pace, once in a properly built pipe, and once in a poorly made pipe, will result in one cool, dry smoke, and one hot, steamy, bland, gurgly mess. (Although, yes, you can ruin a smoke in a good pipe by smoking too fast.)
*A word about filters:
If you do not smoke filter pipes, and if you do not smoke aromatics, I suggest you try the two together at least once! Get a good quality aromatic, built on a good quality tobacco base. Some of my favorites include C&D Autumn Evening, and SGT/WO Larsen 2014/2015. I smoke these in a Savinelli balsa filter pipe. The filter mutes the trace chemical flavors in the casing, and allows only the bolder aromas of the flavoring to come through. It's a good thing.