Manu Propria Pens - Fuki-Urushi - International Association of Penturners
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Old 03-09-2019, 03:48 AM   #1 (permalink)
 
Join Date: Nov 2014
Location: Bern, Switzerland
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Default Manu Propria Pens - Fuki-Urushi

I have made a pair of pens from Ebony and Rosewood.
The first picture shows you the pen after grinding, the other pictures after "fuki-urushi".
Fuki-Urushi is a technique used in Japan for sealing wood, especially furniture.
The pure urushi lacquer is transparent but of a yellowish honey color.
Here urushi is rubbed into the surface of wood and wiped off completely with paper, then cured for 24 hours.
This is repeated sevaral times until the pores are closed well.
The color tone of the urushi also intensifies and darkens the color of the wood.
The inside of the pen was sealed also but with a liquid made from urushi and Acetone.
Since urushi is sticky it cannot be used to seal the inside of the pen.

The wooden blanks I have baked by 130 degree celsius for one hour.
The heat makes the wood shrink and presses out the oils.
When taken out of the oven there were oil pearls visible on the surface that could be wiped off.

Enjoy weekend

Martin
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Old 03-09-2019, 05:29 AM   #2 (permalink)
 
Join Date: Sep 2011
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The pens are beautiful!
A couple questions!
When you say "wiped off completely with paper, then cured for 24 hours" do you use a special paper? Paper towels? If it is wiped off completely what is there to cure?
When wiping off the "oil pearls" did you use acetone? DNA?
Thank you Martin.
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Old 03-09-2019, 06:12 AM   #3 (permalink)
 
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Thank you.
The urushi is rubbed into the wood surface.
The wood absorbs the lacquer as it does if you pur water over it.
I use toilet paper to remove the urushi from the surface.
It takes 24 hours to cure urushi in a "Urushimuro" Cabinet, in which the relative humidity is adjusted to 75% (Urushi does not cure in normal room).
The rubbing process is repeated until the wood is saturated and properly sealed.

I wiped off the oil with Acetone.

Note, after the wood is treated this way the pen is resistant aginst heat, water and all existing acids and lyes
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Old 03-09-2019, 07:11 AM   #4 (permalink)
 
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I fully enjoy every pen you post, and your ever present (trademark) little bean. The fuki-urushi method really shows the beauty of the woods you selected.

I am a bit surprised at the fairly high temperature used to prep the wood. (130*C = 266*F). If I understand correctly, the Blanks are heated prior to turning. I am wondering if this is process used for wood blanks in general, or primarily for oily woods?

It is always a treat to view and read your posts. Thank you!
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Old 03-09-2019, 07:16 AM   #5 (permalink)
 
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Awesome pens.
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Old 03-09-2019, 07:25 AM   #6 (permalink)
 
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I don't know how wood is treated by other wood pen maker but I do so. I want the wood not to shrink after I have turned and lacquered it
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Old 03-09-2019, 07:57 AM   #7 (permalink)
 
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Beautiful!
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Old 03-10-2019, 08:18 AM   #8 (permalink)
 
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Amazing, a true work of art


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Old 03-11-2019, 05:57 PM   #9 (permalink)
 
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Awesome as usual.
Were you able to thread the woods or the threads are made of other material?
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Old 03-11-2019, 08:30 PM   #10 (permalink)
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OOH the Japanese processes - brings beautiful results. Always stunning! It takes patience that I don't have!
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