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Parametric (FreeCAD) Coin Sorter

This is a stacked-sieve type coin sorter where coins are dumped in the top and filter down a several tiers of sieves with decreasingly small holes. The current *.step files are set for a size of 120 mm x 120 mm x 35mm sorting trays with holes designed for Canadian Currency

Editing the file:

• This was created in FreeCAD 1.1 (https://www.freecad.org/downloads.php)

• Variables (VarSet):

  • Box Height 

    • Top part of the sieve tray

    • Make it larger than inset depth

    • Change to something small to generate the lid

  • Inset Depth - Part of the sieve that nests into the tray below

  • Tolerance - Adjust this up or down if your boxes nest too snug or loose respectively

  • Size - Length and width of the box

  • Thickness - Wall thickness

  • Minimum Spacing - Spacing between coin holes

  • Coin#

    • Diameter of the coins in mm (used to calculated hole size)

    • Must be in order of largest to smallest

      • Coin1: 28.0 mm (Toonie)

      • Coin2: 26.5 mm (Loonie)

      • ...

      • ...

  • Which Coin

    • Determines the size of hole that is generated in the model (an average of the diameter of the coin and the coin above it)

      • ex. If WhichCoin = 2 and Coin2 = 26.5 mm (Loonie), a tray with holes bigger than a Loonie but smaller than a Toonie will appear

    • Must be an integer value

    • Anything larger than 10 will result in one giant hole