Free applications and CAD utilities (mostly our freeware & trials) CAD Utilities and add-ins 11ย KB 2123× 17.09.2014 Platonic polyhedra (3D) - tetrahedron, octahedron, icosahedron (LSP for AutoCAD, by Takaya Iwamoto) FILE Size: 11ย KB • AutoLISP file (.lsp) โ load using APPLOAD or drag-and-drop into the AutoCAD window. For automatic loading add the path to acad.lsp or acaddoc.lsp. Free Download ▼ โ Close