Making Shakudō and Shibuichi

Shakudō

1)     Make a Cuttlefish mold

  1. Make an impression for the ingot in a large piece of Cuttlefish
  2. Steady the Cuttlefish by holding it between bricks on a level surface

2)     Make a charcoal crucible by putting a hollow in charcoal like that used for a barbecue

3)     Hold the crucible with a mesh basket with a handle or some grips

4)     Put 95% copper and 5% gold in the crucible along with borax (for flux)

5)     Heat with the oxy-acetylene blow torch until the metal starts spinning and moving

6)     Tip from the crucible, into the Cuttlefish mold

7)     Let it cool

8)     De-oxidize the outside of the ingot in 10% sulphuric acid (to clean it)

9)     Wipe it dry

10) Roll to desired thickness

When cold rolling, annealing (heating up to soften) is needed regularly. The maximum width of flat metal that can be achieved is 16mm and is tricky because the edges crack etc. Creating wire is much easier.

Shibuichi

Same as with Shakudō, but with 90% Copper and 10% Silver for a dark grey and down to 70% Copper and 30% Silver for lighter greys.

 

2 Responses to Making Shakudō and Shibuichi

  1. allan says:

    very nice…… is there a way to make silver reddish in color instead of greyish?

    • admin says:

      There is no traditional method that i know of. Though there may be present day anodizing of various colours like you do with aluminium.

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