Gravitrax compatible spacers in many sizes - adjustable fit

The original Gravitrax parts are 29.7 mm wide at the base. Matthijz98's design is only 29.5 mm wide on the top and bottom. On my printer, this leads to too loose a fit at the 'crown' part. Includes a parametric OpenSCAD file to generate padded versions of the 'crown' at the base to adjust to your printers output. The uploaded stls all match the 29.7 cm of original Gravitrax parts. You can generate only the crown if you disable the import and then place the stl manually in your slicer atop Mattijz98 stl file. Use together with Matthijz98 very popular spacers https://www.printables.com/model/117968-gravitrax-spacers-in-many-sizes As i was satisfied with the fit on the printed inside hexagon, I did not want to scale the full model in x and y, but only pad the top.