Gold Foil – K24 – Extra Thick
Gold Foil – K24 – Extra Thick
$40.00
4 in stock (can be backordered)
Extra thick superior quality 24 carat eco conflict free gold foil for Keum-Boo.
This gold foil is absolutely gorgeous to work with. It is thicker than most commercially available gold foil, which makes it much easier to handle, it can easily be cut with fine scissors and even paper punches. We’re quite sure it will give you more gold for your money – we suggest you do a comparison with other foils available!
Thanks to its thickness it is excellent for Keum-Boo (also called Kumbo, Kum-Boo, Kum-Bu or Keum-Bu), an ancient Korean technique where you fuse gold foil to your silver (or other metals, like steel), using heat and pressure, it gives a beautiful result. If you are a silver clay artist, this is an ideal technique to try.
WEIGHT: 0.2 grams
MEASUREMENTS: 3.5 x 5cm.
Varied thickness (see note below), but approximately 0.014 mm/14 micron – thicker than most foils on the market. Do your comparisons and check the numbers carefully, you might get a surprise.The thickness varies from 0.012-0.016 mm, or 12-16 micron, across the surface. The thickness vary across as it is manufactured by adding many layers of ultrathin gold foils together until they reach the desired thickness. This also means that the density of the foil varies to that of a milled and rolled out gold lump/sheet of the same size. In comparison, gold leaf is about 0.12 microns – so our gold foil is thicker!
MATERIAL: 100% Recycled 24-Carat Gold
ECO GOLD = CONFLICT FREE GOLD!
Art Clay gold products come from 100% recycled gold, which has been extracted from scraps of industrial use (ie. electric parts, plating), jewellery and dentistry. It is not sourced from conflict mines. Aida Chemical Industries Co. Ltd is recognised as Conflict-free Smelters which conforms to international guidelines set by CFSI (Conflict Free Sourcing Initiative).
More About Keum-boo
Keum-boo, translating to “attached gold” in Korean, is an ancient gilding technique that bonds thin sheets of pure gold to silver surfaces. This method enhances the visual appeal and value of silver items by adding rich, golden accents.
Process Overview:
- Surface Preparation: Begin by heating and pickling sterling silver multiple times to bring a fine silver layer to the surface, a process known as depletion gilding.
- Application of Gold Foil: Place 24-karat gold foil onto the prepared silver surface.
- Bonding: Apply heat (typically between 260–370°C) and pressure using a burnisher to create a diffusion bond between the gold and silver atoms, resulting in a permanent attachment.
This technique is valued for its ability to create intricate designs and patterns, allowing artisans to achieve the luxurious appearance of gold without the expense of solid gold pieces. Keum-boo has been utilized across various cultures, including Korean, Japanese, and Chinese metalwork, and continues to be a popular method among contemporary metalsmiths.
