| 摘要 |
A continuous metal foil or sheet of the desired width and thickness is formed by electroforming and is provided with lines of weakness therethrough. The sheets can be cut off into desired lengths and shipped flat. When required, the sheets can be formed either manually or in a guide form to the desired configuration or shape, by bending along the lines of weakness to provide the structure. If desired, break out portions can be removed which are defined by further lines of weakness through the sheets.
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