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Traditional Kintsugi Shop TSUGU TSUGU

Food-safe Glass Urushi - Urushi Lacquer for Glass Kintsugi 10g

Food-safe Glass Urushi - Urushi Lacquer for Glass Kintsugi 10g

Regular price $12.59 USD
Regular price Sale price $12.59 USD
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Adhesion between regular lacquer and glass / glaze on ceramics is poor, but this special lacquer (glass urushi) adheres strongly to glass and glaze.

The photos are examples of glass kintsugi (gold finish).

■ How to use
Before applying this glass lacquer, wash or wipe off the item with ethanol so that there is no oil on the surface. If there is oil, the lacquer will not dry.
Apply or paint the glass urushi directly to glass. You can mix color powder with the glass urushi to decorate your glass.
As with regular lacquer, the glass urushi should be dried in a warm and humid condition in a urushi drying chamber, but it will take longer to dry than regular lacquer.
We recommend that you avoid using the glass urushi and keep it in the urushi drying chamber for at least two to three weeks or even longer. This will allow the lacquer to harden more and reduce risks such as peeling after use. The adhesion strength will increase in proportion to the hardening of the lacquer.

■ Properties of Glass Lacquer
This glass lacquer has about 10% synthetic resin added to the natural lacquer. The added synthetic resin also complies with the Food Sanitation Law.
However, please not that glass urushi does not guarantee 100% adhesion.

The color of glass urushi is dark brown.

■ Product details :
1 x Tube of Urushi Lacquer for Glass Kintsugi (10g)
This tube should be ideally used within a year after being produced.

■ What is urushi ?
Urushi is the tree sap of the lacquer tree. It has been used as a natural glue and a coating layer for hundreds of years in Japan. It is the main ingredient used in kintsugi and Japanese lacquerware. Once it has hardened, urushi is very strong and durable. It is also completely food safe.

■ !!! Warning !!!

Glass urushi should always be handled with care because it can trigger strong skin rashes if it comes into direct contact with the skin. You should always wear gloves and cover your skin when using urushi lacquer. If urushi gets on your skin, wash it off as soon as possible with vegetable oil. Applying hand-cream can help prevent strong rashes.

If you experience a rash when using raw urushi lacquer, please stop using it immediately and make sure to seek the advice of a physician.

Please note that Tsugu Tsugu is not liable for skin irritations caused by the use of urushi.

■ How does urushi harden?
Urushi actually cures by absorbing the ambient humidity. The ideal conditions for curing would be 20~25℃ (68-77°F) with a humidity level of 70~85%. To recreate these conditions, you can make a "urushiburo." (=urushi drying chamber).  You can refer to the following video to create your own urushi drying chamber:

If the temperature and the humidity are good, glass urushi should take 2-3 weeks to cure. It can take longer if you are in a drier/cooler environment

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What is Kintsugi?

Kintsugi is a traditional Japanese art form that originated in the 15th century, and it's been around for over 500 years. When a cherished piece of pottery or porcelain breaks, Kintsugi specialists repair it using natural materials such as genuine lacquer and then decorate the repair marks with gold or silver to make them stand out instead of trying to hide them. Rather, we should allow cracks and blemishes in our belongings to shine and tell a story of their own. The result is an object that's more beautiful than before it was broken, and uniquely valuable because of its history. This is the kintsugi philosophy.

We Are Kintsugi Specialists

Tsugu Tsugu is proud to be part of this ancient tradition—we use only natural materials for our kintsugi repairs. We know where beginners tend to get stuck in the process because we receive so many repairs every day and have taught kintsugi classes for years. That's why our products are filled with educational information and easy-to-understand instructions, along with YouTube videos on the proper way to perform authentic kintsugi. Our goal is to help people around the world successfully perform authentic kintsugi and enjoy a long and prosperous life with their beautiful and favorite pottery.

About Tsugu Tsugu

At Tsugu Tsugu, we are proud to offer kintsugi classes almost every day so that you can share in the fascination of restoring broken pottery.

We believe that there's something special about a piece of broken pottery—it's not just an object that needs to be thrown away, but rather it becomes a treasure once repaired with gold or silver lacquer and put back together. We want to make sure that as many people as possible get to experience this ancient Japanese technique and feel the same joy we do when we see our customers' faces light up with excitement.

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