cyclone-pcb-factory/Hardware/CYCLONE_2/libs/hole_for_screw.scad

// This file is part of Cyclone PCB Factory: an open-source 3D printable CNC machine for PCB manufacture
// http://reprap.org/wiki/Cyclone_PCB_Factory
// Original author: Carlosgs (http://carlosgs.es)
// License: CC BY-SA 4.0 (Attribution-ShareAlike 4.0 International, http://creativecommons.org/licenses/by-sa/4.0/)
// Designed with http://www.openscad.org/

include <MCAD/nuts_and_bolts.scad>

module hole_for_screw(size=3,length=20,nutDepth=5,nutAddedLen=0,captiveLen=0,tolerance=0.5) {
	*translate([0,-length/2+nutDepth,0])
		rotate([90,0,0])
		hull() {
		translate([0,0,nutDepth])
			scale([1,1,0.01])
			nutHole(size=size, tolerance=tolerance, proj=-1);
		scale([1,1,0.01]) nutHole(size=size, tolerance=tolerance, proj=-1);
		}
	radius = METRIC_NUT_AC_WIDTHS[size]/2+tolerance;
	height = METRIC_NUT_THICKNESS[size]+tolerance;
	translate([0,-length/2+height+nutAddedLen+nutDepth-0.01,0])
		scale([1,(height+nutAddedLen)/height,1])
			rotate([90,0,0])
				hull() {
					nutHole(size=size, tolerance=tolerance, proj=-1);
					translate([0,captiveLen,0])
						nutHole(size=size, tolerance=tolerance, proj=-1);
				}
	translate([0,length/2-2.6,0])
		rotate([90,0,0])
			render() boltHole(size=size, length=length-2.6+0.5, tolerance=tolerance-0.1, proj=-1, $fn=40);
}

hole_for_screw(size=3,length=20,nutDepth=0,nutAddedLen=0,captiveLen=10);