Eureka Moment.

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mawnansmiff

Lifer
Oct 14, 2015
7,901
8,929
Sunny Cornwall, UK.
Last night whilst enjoying a bowl of Germain's Rich Dark Flake I had a eureka moment. The particular pipe I was using is one that consistently gives me a good smoke, one which most reveals what flavours a particular blend has to offer. This pipe also has a unique feature the like of which I have never seen before in a pipe and that is that it has not one but two draught holes! Both of these draught holes are aluminium sleeved too. I have only ever seen that once afore in a Hardcastle Bruyere bent billiard. The pipe with two draught holes by the way is a Swiss made 'Bernina' 659 bent billiard with horn stem, truly a fantastic smoker.
I realized it was such a good smoker due to the combined draught hole diameters being more than the usual 3.5mm that most of my pipes tend to have. I have read here & elsewhere of folks increasing the diameter by a very small amount and stating that the pipe was transformed from a mediocre smoker to a stunning smoker so thought I would give it a go.
I selected a rather nice Peterson blasted bent pot as my guinea pig. This pipe smokes ok but only ok, it is nothing special in that regard. I got out my Bosch cordless drill and set of bits and went to work. It is very important to first get an idea of the draught hole diameter as it is before you do any drilling. I did this by sliding in (by hand) various sized bits until I felt resistance, then make a mental note of that drill size. In this particular instance just under 4mm was my size. I then selected the next size up which was 4.5mm (4.78mm according to my digital calipers).
For the next part it must be stressed, unless you are confident and familiar with power tools, do not use a power drill, use a T handle to hold the bit or use a vice. I selected the screwdriver function on the Bosch as opposed to the drilling function. The reasons are twofold, one the drill moves much more slowly and two you have much more torque, both make the task that much more controllable. Also important to remember particularly on a bent pipe is to work out the angle of the draught hole in relation to the bowl. A straight pipe would be much easier to work on.
I set the drill going at a slow speed and with the stummel firmly gripped I started to drill into the shank being careful to get the tip of the bit right on the existing hole. I drilled SLOWLY and withdrew the bit often to clear the flutes and check accuracy. So far so good. After a few moments shavings started to appear in the bowl so I slowed down even more until the tip of the bit finally popped through which is where I stopped and withdrew the bit. I tapped out the shavings and refitted the stem.
For a trial tobacco I selected Rattray's Old Gowrie, a relative newcomer to my baccy box and one which I was struggling to define properly. Well what a surprise, once lit that blend just burst open in the bowl with flavours that had eluded me in other pipes, the Peterson included! Also noted as the bowl progressed was no relights were required once the burn was established and it seemed to smoke drier so a win win for such little effort.
This morning I did the same to a Comoy's Everyman curved Dublin and am now smoking a bowl of Elizabethan Mixture in it and again, the flavours are pouring out!
I am so pleased I tried this and would recommend folks give it a go if they have a restricted draught hole but it has to be stressed, patience and a careful hand are imperative for this task. Remember, one can (easily) remove briar but one cannot replace it.
I now have a whole load of work to do to open up the draw on all of my pipes...ho hum :puffy:
Regards,
Jay.

 

davidintexas

Part of the Furniture Now
Jun 4, 2013
682
246
Tedious work but at least you know you have something to look forward to, that most of your smokes should be amazing compared to previous ones. Congratulations on your discovery

 

aldecaker

Lifer
Feb 13, 2015
4,407
51
5/32" is my sweet spot. A regular twist drill for the shank, and a 5/32" taper bit for the stem airway. That and a countersink to funnel the end of the tenon will take you a long, long way.

 

jpmcwjr

Lifer
May 12, 2015
26,265
29,180
Carmel Valley, CA
What advantage is there to funneling the tenon besides aesthetics? Seems it would allow for more turbulence and condensation as there's a bigger gap between mortise and tenon. Curious is all.
Also, how does one widen a bent stem, short of straightening it, drilling and rebending?

 

mawnansmiff

Lifer
Oct 14, 2015
7,901
8,929
Sunny Cornwall, UK.
John, that was something I was interested in looking at doing. By some accounts if one only opens up the stem to the point where the bend actually starts there is a noticeable benefit. I shall have to give it a go over the next few days. For now though I am delighted in what I am doing with the shank, it really has changed how I enjoy a blend.
Right now I'm enjoying some St. James Flake in a newly opened up Parker :puffy:
Regards,
Jay.

 

aldecaker

Lifer
Feb 13, 2015
4,407
51
Not all tenons will benefit from funneling (and many come from the maker already funneled anyway). Funneling is for tenon ends that are chopped off square with a very large wall thickness. The moisture-laden smoke will have to hit the thick face of the tenon, turn 90 degrees, then turn 90 degrees again to continue down the airway. It is a great spot for turbulence and moisture deposition. Funneling reduces the surface area that the smoke slams straight into, reducing turbulence.
Your two choices with a bent stem are to straighten and re-bend, as you say, or simply enlarge the airway as far as you can without running into the radius. Even enlarging it part way with a tapered bit will smooth the transition from a larger diameter in the shank to a smaller diameter in the stem. Think funneling again, just inside the stem.

 

mawnansmiff

Lifer
Oct 14, 2015
7,901
8,929
Sunny Cornwall, UK.
Aldcaker, what is the reasoning behind using a tapered bit? Unfortunately I have no tapered bits and trying to find a source here in the UK is proving rather difficult. Do they go by another name?
Regards,
Jay.

 

jpmcwjr

Lifer
May 12, 2015
26,265
29,180
Carmel Valley, CA
@ aldecaker- Thanks. So, this applies only when the draft holes don't line up?
In any event, I've not found any problems with turbulence causing condensation, but I dry all my tobacco below 75% RH @ 70º. Gurgle is very rare.

 

aldecaker

Lifer
Feb 13, 2015
4,407
51
@Smiff- The reason I use a tapered bit on the stem airway is because I would rather have the airway taper down to the slot, instead of blasting right through it. I re-worked the airways on a couple of basket pipes I was fond of; those had too narrow of a slot anyway, so those, I did go right through. They look like a hybrid orific/slotted airway, but they work great.
I was able to find a tapered bit very easily at one of our big-box home improvement stores. IIRC, it was Lowe's. I don't know of any other name they would go by, but I can check into it and get back to you.
@jpm- I wouldn't necessarily say when they don't line up so much as when they have a big, blunt face to collect excessive moisture. Preventing moisture in the first place is ideal, though.

 

mawnansmiff

Lifer
Oct 14, 2015
7,901
8,929
Sunny Cornwall, UK.
Aldcaker, thanks for the clarification, I shall now definitely seek out some tapered bits.
Last night I became aware of the only downside to me opening up my pipes and that was ghosting! Up until now I have only read about it and never experienced it despite me smoking mainly Condor (RR & LC) in whatever pipe took my fancy. I might then smoke a more delicate blend in the same pipe and all seemed well. Last night I was enjoying some Royal Yacht (rapidly becoming a favourite) in an opened up Captain Black and towards the end of the bowl got the occasional hint of Condor!
I am fastidious in cleaning my pipes after each smoke but the ghost was most definitely there. This is further proof to me that opening up my pipes is allowing me to be very aware of what I am smoking flavourwise. So best I do what everyone else seems to do and start allocating certain pipes to certain types of blend.
Regards,
Jay.

 

aldecaker

Lifer
Feb 13, 2015
4,407
51
@Smiff- The first thing I noticed when I bought Forever Stems for some of my cobs was how noticeable the change was in how the cob smoked. It certainly didn't ruin it, but you could tell the change in mechanics changed the smoking characteristics. Granted, my favorite cob is still a bent Twain with a nosewarmer Forever Stem! I have been wanting to get a couple more FSes to open up and see if I can bring back the "running straight pipes" effect of a stock MM, but FSes seem to be in short supply lately. I have just defaulted back to upgrading with MM Danish bits; I like them 1000% more than the stock stems.

 

mawnansmiff

Lifer
Oct 14, 2015
7,901
8,929
Sunny Cornwall, UK.
Aldcaker I have only ever read about 'Forever Stems', I have never seen one but understand that many cob smokers buy them as the original stems leave a lot to be desired.
I spent a couple of hours today trying to source tapered bits but no dice as the Americans say :|
Regards,
Jay.

 

paulfg

Lifer
Feb 21, 2016
1,740
3,280
Corfu Greece
@mawnansmiff if you are in not too much hurry try here (free uk delivery)
http://www.ffx.co.uk/tools/c/Drill%20Bits%20%20Specialist,%20Trend%20Snappy%20Drill%20Bits%20%20Accs/1
or google taper point drill bits
http://www.ffx.co.uk/tools/product/Trend%20Wp%20Snap%20Dt%2040%205027654523254%20Snappy%204.0Mm%20Taper%20Point%20Drill%20Only

 

Waning Embers

Captain of the Black Frigate
Nov 12, 2014
47,737
129,088
I like MM's stock stems, though I did drop the hint to Marilyn Lanning of MM that if they introduced acrylic replacement stems, they would likely sell a ton.

 

aldecaker

Lifer
Feb 13, 2015
4,407
51
I like the open draft of the stock stems, but the bit area is too dainty for my tastes. The Danish version has the good draft and a more comfortable bit, but they still wear out from tooth chatter rather quickly.

 
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