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I practice "シアノアクリレート継ぎ", which is the same thing but using cyanoacrylate adhesives instead of gold. I'm not sure how food safe it is though.

by Zababa 5y ago

renewiltord 5y ago
Would you kindly share a photograph of something you have made with this technique?
washadjeffmad 5y ago
To non-kana readers, "shianoakurireeto tsugi", more literally cyanoacrylate "patch". 継 is used in ideas like inheritance, succession, relief (pitcher), and relays (the thing that provides continuity between things).
- Zababa 5y ago
  To expand a bit on that for the curious, kintsugi is written as 金継ぎ. 金 is "gold" (the "kin" in kintsugi), so I replaced the "gold" part with the "cyanoacrylate" part, and glued it to the 継ぎ ending. Katakana (the symbols used for シアノアクリレート) is often used for foreign words. 金 and 継 are kanjis, characters that comes from China. They usually have different pronunciations depending on if they are alone or part of a word. ぎ is an hiragana, the hiragana for "gi". Hiragana and katakana are syllabaries that are mostly equivalent. ぎ in katakana would be ギ, and シアノアクリレート in hiragana would be しあのあくりれっと.
  - pezezin 5y ago
    To expand on your comment, the ぎ after 継 is an okurigana, a suffix used to specify the pronunciation of the preceding kanji. Anyway, your comment really made me laugh, so please take your upvote :D
colechristensen 5y ago
They do use CA glue directly on your body to do some bio patch work so the bulk ingredient is at least somewhat safe, though the medical grade stuff is crazy expensive and who knows what’s in the $1 tube as additives. (Like plastic, often but not always the chemicals of concern aren’t the main polymer but things added to it to improve its engineering qualities.)
ofrzeta 5y ago
I bought some Urushi online in a tube but I am hesitant to use it on tableware due to the caveats on the packacking that say you should wear gloves and eye protection. It doesn't really sound more healthy than cyanoacrylate.
- maxbond 5y ago
  The SDS would hopefully clear up or confirm your concerns, and I have no idea if the product you bought is food safe or not, but I would point out that you should definitely wear gloves to handle any strong glue, whether it's food safe or not, and that the solvents are often eye irritants. I'd discovered the hard way that the solvents in cyanoacrylate glues in particular are eye irritants. (Not a way to fix glasses, folks.) So, for what it's worth, I personally would be neither deterred nor comforted by the information you presented. However, "I do not understand if this is safe and don't have the time to research it to my satisfaction" is a totally solid reason for deciding not to do something on safety grounds in my book. If you're able to email the company and ask for an SDS, they'll probably give it to you. I've had luck with this before.
- stevenveltema 5y ago
  I have used urushi for both kintsugi and wooden ware and while I can't speak to your urushi in particular generally do not get it on your skin. Similar to other resins, even if you have no reaction initially the more you come in contact with it, the more likely you are going to have a reaction. It's quite common for craftsmen that have worked with urushi for years to suddenly become sensitized to it. Also, some people can have severe allergic reactions to uncured urushi so care should be taken if this is your first time working with it. This is a reaction to uncured urushi however, cured urushi is quite safe. For use on wooden tableware I would suggest. - 1 coat of urushi diluted 1/2 with pine turpentine. Apply liberally to allow it to soak into the wood then wipe the entire surface down removing excess. Place in a closed box with (but not touching) a wet towel (make sure it doesn't dry out) for roughly 1 week. The moisture + time will cure the urushi. - repeat 1 or 2 times (or as many times as you like) with undiluted urushi letting it cure between each coat.
cwmoore 5y ago
> lacquer is the perfect adhesive for Japan’s humid environment because it dries or hardens by absorbing moisture from the air What's old is new.
- User23 5y ago
  This reminds me of the old Roman concrete. It actually gets stronger when exposed to moisture. So far as I know, no modern concrete matches it for long term durability.

I practice "シアノアクリレート継ぎ", which is the same thing but using cyanoacrylate adhesives instead of gold. I'm not sure how food safe it is though.

by Zababa 5y ago

I practice "シアノアクリレート継ぎ", which is the same thing but using cyanoacrylate adhesives instead of gold. I'm not sure how food safe it is though.

renewiltord 5y ago

Would you kindly share a photograph of something you have made with this technique?

washadjeffmad 5y ago

To non-kana readers, "shianoakurireeto tsugi", more literally cyanoacrylate "patch". 継 is used in ideas like inheritance, succession, relief (pitcher), and relays (the thing that provides continuity between things).

Zababa 5y ago
To expand a bit on that for the curious, kintsugi is written as 金継ぎ. 金 is "gold" (the "kin" in kintsugi), so I replaced the "gold" part with the "cyanoacrylate" part, and glued it to the 継ぎ ending. Katakana (the symbols used for シアノアクリレート) is often used for foreign words. 金 and 継 are kanjis, characters that comes from China. They usually have different pronunciations depending on if they are alone or part of a word. ぎ is an hiragana, the hiragana for "gi". Hiragana and katakana are syllabaries that are mostly equivalent. ぎ in katakana would be ギ, and シアノアクリレート in hiragana would be しあのあくりれっと.
- pezezin 5y ago
  To expand on your comment, the ぎ after 継 is an okurigana, a suffix used to specify the pronunciation of the preceding kanji. Anyway, your comment really made me laugh, so please take your upvote :D

colechristensen 5y ago

They do use CA glue directly on your body to do some bio patch work so the bulk ingredient is at least somewhat safe, though the medical grade stuff is crazy expensive and who knows what’s in the $1 tube as additives. (Like plastic, often but not always the chemicals of concern aren’t the main polymer but things added to it to improve its engineering qualities.)

ofrzeta 5y ago

I bought some Urushi online in a tube but I am hesitant to use it on tableware due to the caveats on the packacking that say you should wear gloves and eye protection. It doesn't really sound more healthy than cyanoacrylate.

maxbond 5y ago
The SDS would hopefully clear up or confirm your concerns, and I have no idea if the product you bought is food safe or not, but I would point out that you should definitely wear gloves to handle any strong glue, whether it's food safe or not, and that the solvents are often eye irritants. I'd discovered the hard way that the solvents in cyanoacrylate glues in particular are eye irritants. (Not a way to fix glasses, folks.) So, for what it's worth, I personally would be neither deterred nor comforted by the information you presented. However, "I do not understand if this is safe and don't have the time to research it to my satisfaction" is a totally solid reason for deciding not to do something on safety grounds in my book. If you're able to email the company and ask for an SDS, they'll probably give it to you. I've had luck with this before.
stevenveltema 5y ago
I have used urushi for both kintsugi and wooden ware and while I can't speak to your urushi in particular generally do not get it on your skin. Similar to other resins, even if you have no reaction initially the more you come in contact with it, the more likely you are going to have a reaction. It's quite common for craftsmen that have worked with urushi for years to suddenly become sensitized to it. Also, some people can have severe allergic reactions to uncured urushi so care should be taken if this is your first time working with it. This is a reaction to uncured urushi however, cured urushi is quite safe. For use on wooden tableware I would suggest. - 1 coat of urushi diluted 1/2 with pine turpentine. Apply liberally to allow it to soak into the wood then wipe the entire surface down removing excess. Place in a closed box with (but not touching) a wet towel (make sure it doesn't dry out) for roughly 1 week. The moisture + time will cure the urushi. - repeat 1 or 2 times (or as many times as you like) with undiluted urushi letting it cure between each coat.

cwmoore 5y ago

> lacquer is the perfect adhesive for Japan’s humid environment because it dries or hardens by absorbing moisture from the air What's old is new.

User23 5y ago
This reminds me of the old Roman concrete. It actually gets stronger when exposed to moisture. So far as I know, no modern concrete matches it for long term durability.