A broken ceramic traced with gold-coloured lines may have been repaired in several different ways. Traditional urushi kintsugi and epoxy kits with gold-coloured powder can share a visual effect, while using different materials and processes.
As an art restorer, I believe in naming techniques precisely. Before choosing a treatment, it helps to understand what joins the fragments, what creates the gold finish and what we want to preserve of the object.
Traditional kintsugi: lacquer before gold
In the traditional technique I practise, natural urushi lacquer plays a role at several stages. Preparation, joining, filling losses and refining surfaces all come before the final finish. The lacquer layers require time and suitable curing conditions.
Gold is not an adhesive. It is the finish applied to a carefully prepared surface, supported by the work underneath. For my gold restorations, I use pure 24-karat gold. Other finishes may be considered according to the piece and the project.
You can explore the stages of my practice on the traditional kintsugi restoration service page.
What is in an epoxy and gold-coloured powder kit?
The kits discussed here use a two-part epoxy adhesive: a resin and a hardener mixed according to the instructions. Gold-coloured powder provides the decorative effect. Depending on the kit, it is mixed into the adhesive or applied as a finishing layer. Some kits also include a filling putty.
These kits offer an accessible decorative approach. However, the word “kintsugi” on the packaging does not identify the traditional method on its own. The materials and instructions need to be read carefully.
Likewise, “gold-coloured powder” does not automatically mean pure gold powder. Colour alone tells us nothing definite about the material’s composition. When comparing repairs, ask which adhesive and which finishing powder are actually used.
Setting time is only part of the work
Some epoxy adhesives have a short working time. This should not be confused with full curing time, which depends on the specific product and conditions. A claim of “a few minutes” does not mean that the repaired piece is immediately ready for use.
Restoration also includes examination, preparation of fracture surfaces, accurate alignment, filling and finishing. Differences in time or price cannot be explained by the quantity of gold alone.
For antique ceramics, start with the object
A craft kit and a treatment designed after examination address different situations. The ceramic’s porosity, the condition of its glaze, previous repairs and missing sections can all influence the intervention. A poorly aligned join may complicate later work.
This does not mean that every synthetic resin is unsuitable for conservation. A professional adhesive is selected case by case. Equally, a traditional technique is not automatically the best choice for every historic object.
Gold-coloured lines do not establish food suitability
Food-contact suitability cannot be inferred from a gold appearance or from the words “natural”, “epoxy” or “kintsugi”. It depends on the whole repair, the ceramic itself, the specific products and how they are used. With a kit, consult the manufacturer’s explicit instructions about food contact and conditions of use. Where clear information is absent, keep the piece for decorative use.
For an antique or collectible object, preservation and display may take priority over everyday use. At my studio, this is considered as part of the project before treatment begins.
Making an informed choice
A kit may offer a creative experience with an ordinary decorative object. Entrusting a piece to a restorer involves a different process: examining it, selecting materials and defining an intervention consistent with its history.
I undertake a limited number of traditional urushi and precious-metal restorations. To submit a project to the studio, briefly describe the object, your wishes and the budget you are considering.
Further reading: the Smithsonian discusses urushi’s role in traditional kintsugi. A Cardiff University account examines one particular epoxy kit; its observations should not be applied to every kit.
