On a segment of Jay Leno's garage they showed their use of a 3D printer. Antique car parts that were no longer available were modeled in plastic. But, rather than using the plastic part, it was used as a prototype and a mold was made from it. That mold was then used to cast metal parts. The 3d CAD Model was also used for finish machining of the casting.
Really interesting and expensive for one part, but the unit cost comes down rapidly if several are needed. Most of the cost is in the creation of the model. Of course the complexity of the casting is part of that too.
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Today's Featured Article - Restoration Story: Fordson Major - by Anthony West. George bought his Fordson Major from a an implement sale about 18 years ago for £200.00 (UK). There is no known history regarding its origins or what service it had done, but the following work was undertaken alone to bring it up to show standard. From the engine number, it was found that this Major was produced late 1946. It was almost complete but had various parts that would definitely need replacing.
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