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56 lines
1.4 KiB
OpenSCAD
56 lines
1.4 KiB
OpenSCAD
include <config.scad>
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use <GDMUtils.scad>
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module lock_tab(h=30, wall=3, slop=0.0)
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{
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s1 = 2*wall-slop/2;
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s2 = wall-slop/2;
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ang = atan(((s1-s2)/2)/(h-2));
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translate([0, -(1.5*wall), 0]) union () {
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intersection() {
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yrot( ang) translate([0,0,(h+5)/2])
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cube(size=[s1*2, wall-2*slop, h+10], center=true);
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yrot(-ang) translate([0,0,(h+5)/2])
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cube(size=[s1*2, wall-2*slop, h+10], center=true);
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translate([0,0,(h-wall-slop)/2])
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cube(size=[s1*2, wall-2*slop, h-wall-slop+0.05], center=true);
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}
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}
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translate([0, -(wall+slop/2)/2-0.05, (h-wall-slop)/2])
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cube(size=[wall-2*slop, wall+slop/2+0.1, h-wall-slop+0.05], center=true);
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}
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//lock_tab(h=30, wall=2, slop=-0.9);
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module lock_slot(h=30, wall=3, backing=0, slop=0.3)
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{
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s1 = 2*wall+slop/2;
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s2 = wall+slop/2;
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w = 2*s1+2*wall;
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d = wall*3+slop;
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ang = atan(((s1-s2)/2)/(h-2));
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translate([0, (d+backing)/2, 0]) {
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difference() {
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intersection() {
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yrot( ang) translate([0, 0, (h+5)/2])
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cube(size=[w, d+backing, h+10], center=true);
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yrot(-ang) translate([0, 0, (h+5)/2])
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cube(size=[w, d+backing, h+10], center=true);
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translate([0, 0, h/2])
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cube(size=[w, d+backing, h], center=true);
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}
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translate([0, (d+backing)/2+0.05, -0.05])
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lock_tab(h=h, wall=wall, slop=-slop);
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}
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}
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}
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//!lock_slot(h=30, wall=2, slop=0.5);
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// vim: noexpandtab tabstop=4 shiftwidth=4 softtabstop=4 nowrap
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