A jig or former on which to built a vessel.
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FORMER
A jig to bend or shape timber upon.
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SAWN FRAMES
Sawn frames are assembled from separate pieces, either half lapped or gusseted together to form the shape required for the hull. Alternatively, bent frames are bent around a former or into a hull using one or more layers of solid wood.
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CUSTOMS INVOICE
A form requiring all data in a commercial invoice along with a Certificate of value and/or a Certificate of origin. Required in a few countries (usually former British territories) and usually serves as a seller's commercial invoice.
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ARC PROCESS
A former process that used electric arcs for fixation (oxidation) of atmospheric nitrogen to manufacture nitric acid.
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