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  •  » Is it usefull to bind raw bamboo while drying to prevent cracks?

#1 2009-10-30 15:47:52

Itamar Foguel
Member
From: Israel
Registered: 2009-09-13
Posts: 120
Website

Is it usefull to bind raw bamboo while drying to prevent cracks?

Some of the bamboo began to crack while getting its 2 weeks sunbath, its a pity since i dont have much bamboo anyway, so the question is how to close those cracks and how to prevent further cracking.?

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#2 2009-10-30 17:54:39

edosan
Edomologist
From: Salt Lake City
Registered: 2005-10-09
Posts: 2185

Re: Is it usefull to bind raw bamboo while drying to prevent cracks?

Itamar Foguel wrote:

Some of the bamboo began to crack while getting its 2 weeks sunbath, its a pity since i dont have much bamboo anyway, so the question is how to close those cracks and how to prevent further cracking.?

It would be a good idea to close the cracks up before binding them by humidifying the bamboo. Binding along is unlikely to close the cracks, but it will hold closed cracks if enough binding is applied.

You can put the culms in a humid enclosure, or they can be wrapped with dampened strips of cloth and placed in long plastic bags. When the cracks are closed, hop to it.


Zen is not easy.
It takes effort to attain nothingness.
And then what do you have?
Bupkes.

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#3 2009-10-31 01:47:20

edosan
Edomologist
From: Salt Lake City
Registered: 2005-10-09
Posts: 2185

Re: Is it usefull to bind raw bamboo while drying to prevent cracks?

Jon wrote:

Will that work on "raw" green bamboo?

Only one way to find out, isn't there? The cracks result from moisture loss, green or not--and who knows how 'green' his culms are, anyway? Cracks aren't gonna close by themselves, y'know.


Zen is not easy.
It takes effort to attain nothingness.
And then what do you have?
Bupkes.

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#4 2009-11-01 00:29:56

Yungflutes
Flutemaker/Performer
From: New York City
Registered: 2005-10-08
Posts: 1061
Website

Re: Is it usefull to bind raw bamboo while drying to prevent cracks?

Itamar Foguel wrote:

Some of the bamboo began to crack while getting its 2 weeks sunbath, its a pity since i dont have much bamboo anyway, so the question is how to close those cracks and how to prevent further cracking.?

Hi Itamar, have you seen these threads on cracked bamboo?

http://www.shakuhachiforum.com/viewtopi … 735#p20735
http://www.shakuhachiforum.com/viewtopi … 715#p18715

The second link has some pics:

http://www.yungflutes.com/logphotos/humidbox2.jpg
Every winter I get a lot of cracked flutes coming in for repairs. This photo shows some repairs along with some cracked stock I was attempting to save.

Humidify and bind.
Be well, Perry


"A hot dog is not an animal." - Jet Yung

My Blog/Website on the art of shakuhachi...and parenting.
How to make an Urban Shakuhachi (PVC)

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#5 2009-11-01 10:46:16

edosan
Edomologist
From: Salt Lake City
Registered: 2005-10-09
Posts: 2185

Re: Is it usefull to bind raw bamboo while drying to prevent cracks?

Jon wrote:

Since bindings alone stop the cracks from moving while it finishes curing I say don't mess with it...! smile

"Stop the cracks" as opposed to "close the cracks" ain't the same thing. The culms will have to be humidified eventually in order to close the cracks (just ask Perry, with his big poly storage containers), so you may as well humidify them now, close the cracks and bind them to keep them closed, and then let the curing process work itself out with the cracks closed. All of your culms are will not be usable, but some will survive.


Zen is not easy.
It takes effort to attain nothingness.
And then what do you have?
Bupkes.

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#6 2009-11-03 15:09:32

Yungflutes
Flutemaker/Performer
From: New York City
Registered: 2005-10-08
Posts: 1061
Website

Re: Is it usefull to bind raw bamboo while drying to prevent cracks?

Itmar, if your bamboo has cracked and they are still green, I would bring them to Ken's BBQ. It's a weed, there's more out there.

Be well, Perry


"A hot dog is not an animal." - Jet Yung

My Blog/Website on the art of shakuhachi...and parenting.
How to make an Urban Shakuhachi (PVC)

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#7 2009-11-05 18:03:09

Itamar Foguel
Member
From: Israel
Registered: 2009-09-13
Posts: 120
Website

Re: Is it usefull to bind raw bamboo while drying to prevent cracks?

i binded some, most of them are not cracked so bad but only one piece is not cracked at all. and Perry...as of now its preety much hard to get root end bamboo here in israel either green or dry (i got those from a guy who got all his house serrounded with beutifull tall bamboo, but he takes some out only once every few months and i cant take more....), myn are after sun bath and abarnuki lying and air drying in my room. i should try the wet rug in a few months after they completely dry?

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#8 2009-11-06 10:49:32

Yungflutes
Flutemaker/Performer
From: New York City
Registered: 2005-10-08
Posts: 1061
Website

Re: Is it usefull to bind raw bamboo while drying to prevent cracks?

Itamar Foguel wrote:

i binded some, most of them are not cracked so bad but only one piece is not cracked at all. and Perry...as of now its preety much hard to get root end bamboo here in israel either green or dry (i got those from a guy who got all his house serrounded with beautifull tall bamboo, but he takes some out only once every few months and i cant take more....), myn are after sun bath and abarnuki lying and air drying in my room. i should try the wet rug in a few months after they completely dry?

Hi Itmar,

I just reread my earlier posting and see that it may have come across a little flippant. I did not mean to make fun your bamboo situation. It was my attempt at humor while exhausted from daddy duties. My apologies if it came across that way.

Since your bamboo is not fully cured, it would be best to prevent further cracking rather than repairing now. You can save your hands by using round metal hose clamps to secure them. Put a clamp every 4cm up to the end of the crack. I have a few pieces like this in my shop that I harvested in Kyushu in 2003. The cracks are stabilized and have not moved in years.

When you are ready to make the flute, measure out the length, mark the finger holes, then bind every 2cm (at least 1cm away from any finger holes) before you do the work. This will save you from having to remove and rebind in case you put one near a hole. You should also protect them by putting painter's tape over them as you work.

Here's a shot from my fire escape this morning:

http://www.yungflutes.com/logphotos/crackfirescape2.jpg

This piece of Chinese Madake was sent from China a year ago from someone who wanted to barter for a flute. This piece cracked in transit and arrived with a 10cm hairline at the top. The following day was rainy day so I put it on the fire escape. The crack closed in a matter of hours. The next day it was sunny and the crack opened up. I decided to leave it on the fire escape for research. Over the past year, I've kept and eye on it. The piece has experienced summer, direct sunlight, winter, snow...and cab exhaust. It has now reached the root. I hadn't decided when I was going to take it in but a student yesterday noticed it and said, "Hey, I didn't know you can keep keep a flutes out side like that!"

Every piece of bamboo is different. If your bamboo is thin-walled, like Phyllostachys Nigra (Black Bamboo) you will not need to humidify it. You could pinch the crack closed on Black bamboo. Young Madake can be thin walled also but if it's dense , aged and thick-walled like traditional Japanese Madake bamboo used for shakuhachi making, you will most likely need to humidify to close the cracks. This doesn't mean you have to wrap a wet rag around the bamboo, just place it in box with a cup of water. In a while, the crack will close. If not, you will need use a rag. I have encountered several very stubborn pieces on thick shakuhachi that needed to be wrapped with wet rags around it for over two days before the cracks closed (in these cases,you have to be carefull as the crack can grab the rag). What kind of bamboo do you have?

Take care of your babies smile


"A hot dog is not an animal." - Jet Yung

My Blog/Website on the art of shakuhachi...and parenting.
How to make an Urban Shakuhachi (PVC)

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#9 2009-11-06 11:35:52

edosan
Edomologist
From: Salt Lake City
Registered: 2005-10-09
Posts: 2185

Re: Is it usefull to bind raw bamboo while drying to prevent cracks?

Yungflutes wrote:

Here's a shot from my fire escape this morning:


Take care of your babies smile

Now, that's just rampant bamboo abuse! For your sake, I hope the Ji-Nazi isn't watching....  hmm


Zen is not easy.
It takes effort to attain nothingness.
And then what do you have?
Bupkes.

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#10 2009-11-06 11:50:03

Yungflutes
Flutemaker/Performer
From: New York City
Registered: 2005-10-08
Posts: 1061
Website

Re: Is it usefull to bind raw bamboo while drying to prevent cracks?

edosan wrote:

Yungflutes wrote:

Here's a shot from my fire escape this morning:


Take care of your babies smile

Now, that's just rampant bamboo abuse! For your sake, I hope the Ji-Nazi isn't watching....  hmm

This research was done for the advancement and understanding if Jinashi!  Ok, I'll bring her in today sad


"A hot dog is not an animal." - Jet Yung

My Blog/Website on the art of shakuhachi...and parenting.
How to make an Urban Shakuhachi (PVC)

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