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 Re: Michael Lowenstern's bore oil experiment
Author: The Doctor ★2017
Date:   2018-05-03 06:21

Disclaimer - I sell a plant derived oil for woodwinds and genuine Grenadilla oil.

I believe that some are not aware that the oil in Grenadilla and other Dalbergia species oily woods have some unique properties.

Plant oils are designed by Nature to actually buffer the water content in the plant (wood). Certain plant oils have a unique structure that allow shells of water to remain bound to the oil molecule. The hydrophobic core of the plant oil has hydrophilic triglycerides on the surface with the glycerol end buried in the hydrophobic core and these hydrophilic elements on the surface interact with water through hydrogen bonding (a form of weak bonding whose strength depends on the interaction of the hydrophilic elements). The first shell of water is very tightly bound and takes a lot of energy to displace it - called the Layer of Hydration. Subsequent shells of water are less and less tightly bound and therefore can remain or leave the inner core of tightly bound water with less energy to displace them.

The energy to displace outer shells of water can, easily and does, interact with relative humidity surrounding the wood, dry will remove the outer water shells but a moist environment will add water until the binding forces of added shells diminish to a point where there is fee water in the wood structure.

The natural wood oil or added similar oils will therefore buffer the water content in the wood depending on the energy supplied by dry or wet condions. Its function is not to displace water but to hold on to as much as it can and buffer the influx and out flow of water within the wood. Since all oils have a specific partial pressure oil can be washed off the surface of the wood by water, and lost by drying conditions, and heat can cause it to evaporate thus diminishing the water holding properties of the wood. A certain moisture content, even in air dried wood, maintains the structural integrity and shape of the wood. Hopefully the wood can maintain the shape when it was manufactured into a clarinet.

Certain pieces of wood may gain or loose oil and moisture to a different extent so when I oil the wood I examine the oil absorption of each piece rather than the clarinet as a whole. The idea is to add thin layers of oil and let the wood absorb it until after a period of time there is some oil on the surface which indicates that the wood has absorbed as much as it wants without over oiling the wood. Some technicians will dunk a stripped clarinet body into a hot oil bath for some period of time but IMHO this can add too much oil to the wood and later oil will weep out of the surface. Timing is critical. But, each to their own method.

All of this has been explained before but a new generation of clarinet players may not have read the old posts.

L. Omar Henderson
www.doctorsprod.com
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 Topics Author  Date
 Michael Lowenstern's bore oil experiment  new
GBK 2018-04-25 11:02 
 Re: Michael Lowenstern's bore oil experiment  new
Speculator Sam 2018-04-25 11:12 
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donald 2018-04-25 12:30 
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 Re: Michael Lowenstern's bore oil experiment  new
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 Re: Michael Lowenstern's bore oil experiment  new
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 Re: Michael Lowenstern's bore oil experiment  new
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 Re: Michael Lowenstern's bore oil experiment  new
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 Re: Michael Lowenstern's bore oil experiment  new
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 Re: Michael Lowenstern's bore oil experiment  new
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 Re: Michael Lowenstern's bore oil experiment  new
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 Re: Michael Lowenstern's bore oil experiment  new
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 Re: Michael Lowenstern's bore oil experiment  new
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 Re: Michael Lowenstern's bore oil experiment  new
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 Re: Michael Lowenstern's bore oil experiment  new
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 Re: Michael Lowenstern's bore oil experiment  new
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 Re: Michael Lowenstern's bore oil experiment  new
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 Re: Michael Lowenstern's bore oil experiment  new
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 Re: Michael Lowenstern's bore oil experiment  new
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 Re: Michael Lowenstern's bore oil experiment  new
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 Re: Michael Lowenstern's bore oil experiment  new
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 Re: Michael Lowenstern's bore oil experiment  new
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 Re: Michael Lowenstern's bore oil experiment  new
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 Re: Michael Lowenstern's bore oil experiment  new
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 Re: Michael Lowenstern's bore oil experiment  new
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 Re: Michael Lowenstern's bore oil experiment  new
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 Re: Michael Lowenstern's bore oil experiment  new
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 Re: Michael Lowenstern's bore oil experiment  new
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 Re: Michael Lowenstern's bore oil experiment  new
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 Re: Michael Lowenstern's bore oil experiment  new
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 Re: Michael Lowenstern's bore oil experiment  new
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 Re: Michael Lowenstern's bore oil experiment  new
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 Re: Michael Lowenstern's bore oil experiment  new
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 Re: Michael Lowenstern's bore oil experiment  new
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