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Initial code dump.
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Revar Desmera
211
joiners.scad
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211
joiners.scad
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//////////////////////////////////////////////////////////////////////
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// Snap-together joiners
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//////////////////////////////////////////////////////////////////////
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/*
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BSD 2-Clause License
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Copyright (c) 2017, Revar Desmera
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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include <transforms.scad>
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module half_joiner_clear(h=20, w=10, a=30, clearance=0)
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{
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dmnd_height = h*1.0;
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dmnd_width = dmnd_height*tan(a);
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guide_size = w/3;
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guide_width = 2*(dmnd_height/2-guide_size)*tan(a);
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difference() {
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// Diamonds.
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scale([w+clearance, dmnd_width/2, dmnd_height/2]) {
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xrot(45) cube(size=[1,sqrt(2),sqrt(2)], center=true);
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}
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// Blunt point of tab.
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grid_of(ya=[-(guide_width/2+2), (guide_width/2+2)]) {
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cube(size=[(w+clearance)*1.05, 4, h*0.99], center=true);
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}
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}
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}
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//half_joiner_clear();
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module half_joiner(h=20, w=10, l=10, a=30, screwsize=undef, guides=true, slop=printer_slop)
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{
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dmnd_height = h*1.0;
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dmnd_width = dmnd_height*tan(a);
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guide_size = w/3;
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guide_width = 2*(dmnd_height/2-guide_size)*tan(a);
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difference() {
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union() {
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// Make base.
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difference() {
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// Solid backing base.
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translate([0,-l/2,0])
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cube(size=[w, l, h], center=true);
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// Clear diamond for tab
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grid_of(xa=[-(w*2/3), (w*2/3)]) {
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half_joiner_clear(h=h+0.01, w=w, clearance=slop*2, a=a);
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}
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}
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difference() {
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// Make tab
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scale([w/3-slop*2, dmnd_width/2, dmnd_height/2]) xrot(45)
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cube(size=[1,sqrt(2),sqrt(2)], center=true);
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// Blunt point of tab.
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translate([0,guide_width/2+2,0])
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cube(size=[w*0.99,4,guide_size*2], center=true);
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}
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// Guide ridges.
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if (guides == true) {
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xspread(w/3-slop*2) {
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// Guide ridge.
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fwd(0.05/2) {
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scale([0.75, 1, 2]) yrot(45)
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cube(size=[guide_size/sqrt(2), guide_width+0.05, guide_size/sqrt(2)], center=true);
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}
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// Snap ridge.
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scale([0.25, 0.5, 1]) zrot(45)
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cube(size=[guide_size/sqrt(2), guide_size/sqrt(2), dmnd_width], center=true);
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}
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}
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}
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// Make screwholes, if needed.
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if (screwsize != undef) {
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yrot(90) cylinder(r=screwsize*1.1/2, h=w+1, center=true, $fn=12);
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}
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}
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}
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//half_joiner(screwsize=3);
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module half_joiner2(h=20, w=10, l=10, a=30, screwsize=undef, guides=true)
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{
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difference() {
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union () {
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translate([0,-l/2,0])
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cube(size=[w, l, h], center=true);
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half_joiner_clear(h=h, w=w, a=a);
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}
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// Subtract mated half_joiner.
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zrot(180) half_joiner(h=h+0.05, w=w+0.05, l=l+0.05, a=a, screwsize=undef, guides=guides, slop=0.0);
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// Make screwholes, if needed.
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if (screwsize != undef) {
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yrot(90) cylinder(r=screwsize*1.1/2, h=w+1, center=true, $fn=12);
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}
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}
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}
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//half_joiner2(screwsize=3);
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module joiner(h=40, w=10, l=10, a=30, screwsize=undef, guides=true, slop=printer_slop)
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{
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union() {
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translate([0,0,h/4])
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half_joiner(h=h/2, w=w, l=l, a=a, screwsize=screwsize, guides=guides, slop=slop);
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translate([0,0,-h/4])
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half_joiner2(h=h/2, w=w, l=l, a=a, screwsize=screwsize, guides=guides);
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}
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}
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//joiner(screwsize=3);
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module joiner_clear(h=40, w=10, a=30, clearance=0)
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{
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grid_of(za=[-h/4,h/4]) {
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half_joiner_clear(h=h/2.0, w=w, a=a, clearance=clearance);
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}
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}
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//joiner_clear();
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module joiner_pair(spacing=100, h=40, w=10, l=10, a=30, screwsize=undef, guides=true)
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{
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yrot_copies([0,180]) {
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translate([spacing/2, 0, 0]) {
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joiner(h=h, w=w, l=l, a=a, screwsize=screwsize, guides=guides);
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}
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}
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}
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//joiner_pair(spacing=100, h=40, w=10, l=10, a=30, screwsize=3, guides=true);
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module joiner_pair_clear(spacing=100, h=40, w=10, a=30, clearance=0)
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{
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yrot_copies([0,180]) {
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translate([spacing/2, 0, 0]) {
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joiner_clear(h=h, w=w, a=a, clearance=clearance);
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}
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}
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}
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//joiner_pair_clear(spacing=100, h=40, w=10, a=30);
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module joiner_quad(xspacing=100, yspacing=50, h=40, w=10, l=10, a=30, screwsize=undef, guides=true)
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{
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zrot_copies([0,180]) {
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translate([0, yspacing/2, 0]) {
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joiner_pair(spacing=xspacing, h=h, w=w, l=l, a=a, screwsize=screwsize, guides=guides);
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}
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}
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}
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//joiner_quad(xspacing=100, yspacing=50, h=40, w=10, l=10, a=30, screwsize=3, guides=true);
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module joiner_quad_clear(xspacing=100, yspacing=50, h=40, w=10, a=30, clearance=0)
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{
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zrot_copies([0,180]) {
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translate([0, yspacing/2, 0]) {
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joiner_pair_clear(spacing=xspacing, h=h, w=w, a=a, clearance=clearance);
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}
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}
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}
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//joiner_quad_clear(xspacing=100, yspacing=50, h=40, w=10, a=30);
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// vim: noexpandtab tabstop=4 shiftwidth=4 softtabstop=4 nowrap
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