OpenSCAD Screw Holes

thingiverse

WARNING: No 3D printer is available - this module still requires tuning based on experiments.\nAny assistance with this will be greatly appreciated.\nThis module provides a function to drill holes for screws.\nUsage:\n\ninclude \n \ndifference()\n{\n solid_object();\n // Drill a hole for a DIN965 M3 screw of length 20 mm, with 10 mm thread.\n // The top of the head of the screw will be in the xy-plane, extending into the positive z direction.\n screw_hole(DIN965, M3, 20, 10);\n\n // Drill a hole through the object that is 30 mm thick, with a countersunk head at a 90 degree angle,\n // 8 mm wide at the top and 4 mm high.\n translate([-10, 10, 0])\n screw_hole([8, 4, 90], M4, 30);\n}\nThe following global variables can be optionally changed after inclusion:\nscrew_hole_fn = 32; // Number of segments for a full circle.\nscrew_hole_length_extend = 0.1; // Extra length of the non-threaded part of the screw extends.\nscrew_hole_height_extend = 0.1; // Extra distance the hole extends above the surface.\nscrew_hole_cylinderhead_spacing = 0.1; // Extra radius of hole around screw head.\nscrew_hole_countersunk_delta = 0.2; // Extra depth of countersunk screw hole.\nThe following standards are currently supported:\nDIN912, DIN963, DIN965, DIN34811, ISO4762, ISO2009, ISO7046, ISO14581 and ISO10642.