Pipe weight & Oil curing Revisited
這是從goolgle找到的,在1999年發表的文章,主要述說煙斗在油處理時的重量變化" Pipe weight & Oil curing Revisited"
作者:Trever Talbert(煙斗製作師傅,他的作品重量,都是超輕量級的煙斗,類似dunhill的油處理及薄斗壁),http://www.talbertpipes.pair.com/index.html
A few days back, I posted about some comparative pipe weights along with
some measurements taken before and after blasting.I've got another
variation of an oil cure going right now, and for the first time I have a
means to accurately track the pipe's weight as I go.I've always been
curious about the claims that the pipe will lose weight during an oil cure,
and wanted to see for myself.So far, this tester has been in process for 5
days - I plan on going at least 10, possibly 20 with it.Here are my notes
straight from the scratchpad...
Before blast- The pipe is round and thick-walled, and on the large side.
Weight is a solid 51.1 grams.
After blast-The weight has dropped to 42.9 grams.Quite a difference from
blasting!It's pretty impressive that almost 20% of the weight could be
lost just by digging away a bit at the surface.
The pipe was heated for a prolonged period and then went into the oil mix to
soak for 24 hours, after which it weighed 43.7 grams.1 gram of oil
penetration doesn't seem like much, but most of what I've read puts the
soaking at a day or less.Briar is very slow to penetrate and absorb, and
it makes me wonder what a longer soak would do, and indeed just how deeply
the oil has gone into the wood.
Onto the peg-I hand-turned some brass pegs for use with a laboratory hot
plate, allowing each stummel to be heated from inside the bowl similar to
the Ashton method.They use heating elements run up into the bowl, but I
thought I'd see what I could do this way.Besides, I'm not interested in
copying anyone else's methods verbatim, but rather in learning and
developing my own unique method.The pipe spent 1 day heating at 250
degrees.A great deal of oil "bleeding" was evident, and it had to be wiped
off a lot as the oil bubbled out through the surface.Weight at the end of
this day was 38.6 grams.Pretty impressive!A 4.3 gram drop in weight from
its state before going into the oil.(Side note - 250 degrees prolonged
will blacken the briar.Either a taller peg is needed or lower temp)
The Moisture Issue-The kicker to all of this was wondering just how much
of that lost 4 grams was "impurities" and how much was simple moisture
content, from baking for a day.It's pretty easy to make a pipe lose
weight - sticking a stummel in the microwave will do it, even.The catch is
that after a day or two of sitting, the wood will regain all or most of the
lost weight right back.Often all you're doing is drying it out below its
normal moisture level.I measured after it sat for one night and the pipe
was back to 39 grams.I wonder how much more it would gain back from
several days of rest?
Another oil-On the second day, the hot pipe took a dip in a different oil
with some different properties.
Baking Day 2-Another day, temp ranging between 200-250 degrees F.Pipe
weight maintains at 38.6 grams.
Day 3 & Day 4-I got extremely busy with other things and didn't measure
the weight either day.The "sweating" has virtually stopped - surface is
dry and nothing else seems to be coming out.Every so often there will be a
tiny wet spot to wipe off, so apparently there is still some oil deep in the
wood that's slowly finding its way outward.
Day 5-38.5 grams after the fifth day.No sign of any further bleeding.
That's where I am now, with another couple of pipes ready to start the
process and one ready for something a bit different.The one written about
above shows all the signs of being a nasty smoke at the moment - I've
learned what the "bad smell" is, no matter how subtle.It's that dank,
greasy taste that's present in so many mediocre oil cures.Time will tell
if it remains at the end of another 2 weeks.It is drying oil, after all,
and will probably take that long or longer to fully dry out.In any case, I
just thought I'd post some of this for general entertainment as well as a
little insight into weight and how it can fluctuate in briar.
Happy smoking,
Trever
咦？ 他是說最後的結果是煙斗味道奇差嗎？ 以下是引用Gregorian在2005-8-26 11:13:11的发言：
咦？ 他是說最後的結果是煙斗味道奇差嗎？
"味道奇差"應該是沒有封孔的結果~~殘留在斗缽內的油,經高溫後揮發出來,和煙混合後被吸入,所以油味很重
我對其油處理時的重量變化,還是有一些疑問,在加溫時重量的減少,是什麼東西減少了,進而致使重量的改變,是水份嗎?還是還有其他的物質呢?
我查了在台灣的木材加工品氣乾含水率在12-14%，如果是以這數據來說,減少應該是水分的重量才對
ps.各國因氣候不同，所以氣乾含水率也有差異
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