Just In Time - Manufacturing -- Food for Thought

If you have the models, grilles could be made with 3D printers in some types of plastics. Some of the higher end printers can print metal, or if there is enough demand, even go to MIM (metal injection moulding, a mix of wax and metal powder get injected into a mould, the shape comes out and then the moulding is heated to a temperature that melts the wax, leaving the metal behind, and then heated even hotter to melt the particles into a solid mass). Given enough demand, you could even take a block of metal, and use a CNC machine to carve it out of the block. It all depends on demand and cost.
 
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