102 lines
3.2 KiB
OpenSCAD
102 lines
3.2 KiB
OpenSCAD
//
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// NopSCADlib Copyright Chris Palmer 2018
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// nop.head@gmail.com
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// hydraraptor.blogspot.com
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//
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// This file is part of NopSCADlib.
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//
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// NopSCADlib is free software: you can redistribute it and/or modify it under the terms of the
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// GNU General Public License as published by the Free Software Foundation, either version 3 of
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// the License, or (at your option) any later version.
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//
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// NopSCADlib is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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// See the GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License along with NopSCADlib.
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// If not, see <https://www.gnu.org/licenses/>.
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//
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//
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//! Printed handle that can be printed without needing support material due to its truncated teardrop profile.
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//
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include <../core.scad>
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use <../vitamins/insert.scad>
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dia = 18;
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length = 90; // inside length
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height = 30; // inside height
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screw = M4_cap_screw;
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insert = screw_insert(screw);
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pitch = length + dia;
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function handle_length() = pitch + dia; //! Outside length
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function handle_width() = dia; //! The width, i.e. diameter
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function handle_height() = height + dia; //! Total height
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function handle_screw() = screw; //! The screw type
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module handle_screw_positions() //! Position children at the screw positions
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for(end = [-1, 1])
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translate([end * pitch / 2, 0])
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children();
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module handle_holes(h = 100) //! Drills holes for the screws
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handle_screw_positions()
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drill(screw_clearance_radius(screw), h);
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module handle_stl() { //! generate the STL
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module end(end)
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translate([end * pitch / 2, 0])
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rotate_extrude()
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intersection() {
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rotate(180)
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teardrop(r = dia / 2, h = 0);
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translate([0, - (dia + 1) / 2])
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square([dia / 2 + 1, dia + 1]);
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}
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stl("handle")
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translate_z(dia / 2)
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union() {
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hull() {
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end(-1);
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end(1);
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}
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handle_screw_positions()
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render() difference() {
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h = height + dia / 2;
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cylinder(d = dia, h = h);
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translate_z(h)
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insert_hole(insert, 6);
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}
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}
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}
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//
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//! Place inserts in the bottom of the posts and push them home with a soldering iron with a conical bit heated to 200°C.
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//
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module handle_assembly() pose([225, 0, 150], [0, 0, 14]) //! Printed part with inserts in place
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assembly("handle", ngb = true) {
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translate_z(handle_height())
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stl_colour(pp1_colour) vflip() handle_stl();
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handle_screw_positions()
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vflip()
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insert(insert);
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}
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module handle_fastened_assembly(thickness) { //! Assembly with fasteners in place
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screw_length = screw_length(screw, thickness, 2, true, longer = true);
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handle_assembly();
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handle_screw_positions()
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vflip()
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translate_z(thickness)
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screw_and_washer(screw, screw_length, true);
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}
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