Mokumegane translates to 'eye of the wood grain metal'. It originates from Japan and was purely used for decorative purposes. 

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The process is relatively simple. Alternating metal sheets are fused together, rolled out, then deformed and carved to expose the different layers and create patterns similar to woodgrain. However, this process has many intricacies that can take decades to master. 

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The process uses solid state diffusion bonding. This is thermally activated. Because of how heat is transferred, the surface of the metal melts first and bonds the billet together without fully melting. 

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Traditionally the main metals used were copper, silver, gold as well as Japanese alloys, shibuichi and shakudo. These combinations are highlighted by the use of patinas. Each metal responding differently and showing a unique colour. 

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In the current day we are able to play with all different types of metals and alloys. All of these have different properties and characteristics. Which affects how well they form diffusion bonds. Based on experiments by Ian Ferguson and extrapolation from data, this is a quick guide showing how easy or difficult each metal bonds with others. 

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