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1st solution. Cut internal to the plate with startup hole

1280 pezzi. 1st solution. Cut internal to the plate with startup hole. W foil 87.55 mm square. 41.75. NOT in the middle Vacuum tool has aspiration holes in the middle. Start hole diam.~1mm. EDM slot, midway between both sides, stopped 2 mm from each side, cut with 0.2mm wire.

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1st solution. Cut internal to the plate with startup hole

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  1. 1280 pezzi 1st solution. Cut internal to the plate with startup hole W foil 87.55 mm square 41.75 NOT in the middle Vacuum tool has aspiration holes in the middle Start hole diam.~1mm EDM slot, midway between both sides, stopped 2 mm from each side, cut with 0.2mm wire =760mm 270mm A.Brez INFN Pisa Test on 0.1mm W sample

  2. 2nd solution with 2 cuts No start hole 2 slots 2mm out of center Symmetric 1mm 4mm 270mm A.Brez INFN Pisa Test on 0.1mm W sample

  3. conclusions The 2 possibilities have been successfully tested The amount of removed material is negligible: 0.27mm/87.55mm = 0.3% (the fluctuation on plate thickness is ~±3%) The second solution is preferred (cost, symmetry, preferred by manufacturer) A.Brez INFN Pisa

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