The gold gets all the attention, but the glue does all the work. Every kintsugi repair stands or falls on its adhesive, and "kintsugi glue" turns out to mean two very different things depending on which century you ask. The traditional answer is a tree sap that cures for weeks and can bring unprotected skin out in a rash. The modern answer is a two-part epoxy that mends a bowl in an evening. If you've been searching for kintsugi glue, or gold glue for ceramics, this is the deep dive: what both versions actually are, what puts the gold in the glue, whether superglue and gold paint will do instead (they won't, and we'll show our working), and how to handle the strong stuff safely.
What is traditional kintsugi glue?
The original kintsugi glue is urushi, a natural lacquer tapped from the Japanese lacquer tree, and it is about as far from a squeeze-tube adhesive as it is possible to get. Each stage of a traditional repair cures for days or weeks in a humidity-controlled cabinet, and a single bowl can take a month or more of patient, repeated work. The gold isn't mixed in, either: fine gold powder is dusted over the lacquer while it's still tacky.
There is one more catch: urushi can cause strong skin reactions until fully cured, which is a large part of why the craft stayed the territory of trained artisans for centuries. A beautiful, demanding material, and emphatically not the thing for a first repair on a Tuesday evening.
Why do modern kits use a two-part epoxy?
Modern kits keep the golden seam and swap the chemistry. In place of urushi they use a two-part epoxy resin: two tubes, part A and part B, each perfectly content to stay liquid indefinitely. Combine them in equal amounts, stir well, and a reaction begins that cures the blend solid. That's the whole cleverness of the design: nothing happens until the parts meet, so the glue keeps until you need it, then gives you a predictable window of working time from the moment you mix.
A good epoxy for ceramics forms a genuinely strong bond and does in an evening, plus a day of curing, what lacquer does in a month. It's the approach we take in our Kintsugi Repair Kit, and if you arrived here hunting for a Japanese gold mending ceramic glue, mica-pigmented epoxy is what the search engines mean. Purists will note it isn't the ancient material, and they're right. It's the ancient look, minus the month of waiting.
What actually makes the glue gold?
Here is the part that surprises people shopping for gold glue for ceramics: the glue isn't gold at all until you make it so. The gold arrives as a separate pot of powder, a premium gold mica pigment from the same family of mineral pigments used in fine cosmetics and art materials, and you stir it into part A before part B joins the party. Once the mixed glue cures, the gold is part of the seam itself, colour all the way through rather than a coating on top.
Two things are worth knowing about the pigment. First, it is strong, so a small scoop is plenty. Second, more is not better: overloading the glue with pigment can weaken the bond, so a repair that glitters magnificently can also be a repair that fails. And if you're wondering whether any gold repair glue uses actual gold: kits with real powdered gold exist, at many times the price, which is why most modern kits choose mica and still get a rich metallic vein.
Can you just use superglue and gold paint?
You can, in the sense that nobody will stop you. But superglue grabs instantly, and instant grab is exactly what a ceramic repair doesn't want: reassembling a broken bowl means offering pieces up, nudging the alignment, pressing and holding. Epoxy gives you working time for all of that. Superglue gives you whatever position you were in when it caught.
The gold paint half of the shortcut disappoints differently. Paint over a dried join sits on top of the crack rather than living in the seam, and the eye can tell: a true kintsugi line is gold through its whole depth because the pigment cured inside the adhesive, while painted gold is just a gilded crack. The whole point of kintsugi is that the repair itself is the decoration, and that only works when the gold is in the glue, not on it.
How do you work with kintsugi glue?
The full repair method belongs to its own guide; here is just the glue side of it.
You mix on a card printed with measuring circles. Fill one circle with part A, stir in a small scoop of gold pigment, then fill the neighbouring circle with an equal measure of part B and combine the lot. From that moment the glue is setting, so you work briskly: spread a thin line along a broken edge, press the join together and hold it for 30 to 60 seconds. Aim to use just enough that a little gold squeezes out of the join. That overflow sets solid and becomes the raised vein that makes kintsugi look like kintsugi.
The golden rule (sorry) is small batches. Mix only what you can use before it sets, then mix fresh and carry on. If the gold epoxy is hardening on the card before you've reached the second piece, you're mixing too much at once, so reduce the batch. When the final piece is placed the job isn't finished, it's resting: full strength takes 24 hours, and the piece should be left alone for all of them.
Is the glue safe to use?
In plain English: this is a strong adhesive, strong enough to make the repair genuinely solid, and it asks for a little respect. The label lists vinyl acetate and methyl methacrylate, which translates into four house rules.
- It's highly flammable, liquid and vapour both. Keep it away from heat, sparks and open flames, and nobody smokes while gluing.
- It can bond skin and eyes in seconds. Point the tube away from your face when opening it, and wear the gloves and eye protection.
- It can irritate skin and airways, so work in a well-ventilated room, or outdoors on a kind day.
- It's for adults only, and it lives well out of reach of children between sessions.
If medical advice is ever needed, have the tube or label to hand. None of this should put you off: it's the short list of courtesies any serious glue asks, and a kit that prints its safety information plainly is taking the craft seriously.
How much glue does one repair need?
Less per batch than you'd expect, and more in total than a single tube would suggest. Because the clock starts at mixing, you'll mix, use and mix again several times across one repair, and a beginner will lose the odd batch to hesitation. So check glue quantity before you buy any kintsugi glue kit: you want multiple tubes rather than one, enough for the repair, the practice run and the mistakes. The Sandy Leaf Farm Kintsugi Repair Kit pairs its adhesive with two china practice bowls for exactly this reason, so your first, thirstiest attempts happen on pieces that carry no sentimental risk.
What surfaces will the epoxy bond?
Ceramic is where the glue performs best: bowls, plates, mugs, vases and ornaments are the natural candidates. The same epoxy will also bond metal, plastic, wood and glass. Glass earns two caveats: the transparent body changes how the golden seam reads, and the reassembly wants planning before any glue is mixed, with real care around sharp exposed edges. Wherever you use it, the mended piece graduates to decorative duty, because the glue is neither food safe nor waterproof, of which more below.
Kintsugi glue FAQs
What glue is used for kintsugi?
Traditional kintsugi uses urushi, a lacquer tapped from the Japanese lacquer tree and cured slowly in humid conditions by trained hands. Modern kits use a two-part epoxy resin with gold mica pigment mixed in, which bonds strongly and fully cures in 24 hours.
Is there a food safe ceramic repair glue?
Not in a kintsugi kit, and we'd rather say so plainly: the epoxy is not food grade, so a repaired piece becomes a decorative object. No food contact, no dishwasher. Tea lights, on the other hand, are the classic happy ending for a mended bowl.
Is the gold in kintsugi glue real gold?
In most modern kits it's a premium gold mica pigment rather than powdered bullion, which keeps the kit affordable while still producing a rich metallic seam. Real-gold kits exist at many times the price.
How long does kintsugi glue take to set?
Each join needs holding for 30 to 60 seconds, and the mixed glue sets quickly enough that small batches are essential. Full strength arrives after 24 hours of undisturbed curing.
Why isn't my epoxy setting?
Almost always the mix. Two-part epoxy only cures when parts A and B are combined in roughly equal amounts and stirred thoroughly, and the broken edges need to be clean and dry. Our Help Hut kintsugi guide troubleshoots this and every other glue misbehaviour we've ever been sent.
Is the finished bond waterproof?
No. The glue isn't waterproof and a repaired piece isn't guaranteed watertight, so it's not the fix for a vase you plan to keep filling. Dust it by hand and let it be beautiful instead.
The Sandy Leaf Farm Kintsugi Repair Kit brings the gold glue, the pigment and two practice bowls to your kitchen table, hand-packed in Britain.
