From Xerbath
STL (3D Model) – $3.90 USD

This set describes a diamond-shaped bastion with an echaugette, matching the four-pointed Vauban Fortress, with 90° angle and widened battlements (or, with the extension to five-pointed fortress).
Contains STL files for 3Dprinting, to be used for tabletop gaming in 1:72 (25mm) scale, but can be used, if scaled by printer, between 1:32 to 1:700.