Block with Holes, Slots, and Tunnels

Create a single solid rectangular block that is 90 mm long (X-axis), 72 mm wide (Y-axis), and 63 mm high (Z-axis). First, add a flat shelf to the top front edge acting as a lifting lip. This lip measures 90 mm long (X), extends 15 mm outward in the negative Y direction, and is 5 mm thick (Z). Second, cut a 5x4 grid of cylindrical holes into the top of the main block. The holes have a diameter of 11.3 mm, a depth of 61 mm, and are spaced exactly 18 mm apart center-to-center along both X and Y. Center this entire grid perfectly within the 90x72 block. Third, for every single hole, cut a 4.5 mm wide vertical slot extending from the cylinder wall all the way down the 61 mm depth. The slots for holes in the 1st and 3rd rows must point towards the front (negative Y). The slots for the 2nd and 4th rows must point towards the back (positive Y). Fourth, cut 3 large tunnels completely through the block along the X-axis, positioned perfectly between the rows of holes. Each X-axis tunnel is 10 mm wide (Y-axis) and 43 mm tall (starting at Z=10 up to Z=53). Apply a 5 mm chamfer to the top interior edges of these tunnels to create a 45-degree pointed roof that guarantees it does not require support. Finally, cut 4 large tunnels completely through the block along the Y-axis, positioned exactly between the columns of holes. These have the exact same dimensions: 10 mm wide (X-axis), 43 mm tall, with the same 5 mm chamfered pointed roofs so they do not require support.

Parameters

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