9 pin_gap = 1.5; // around
24 hole_dia = th + pin_gap;
28 hinge_o_r = 0.5 * hole_dia + th;
30 hinge_x = -0.5 * tube_dia - hinge_o_r;
31 bolt_x = 0.5 * tube_dia + th + bolt_flat * 0.5;
32 max_x = bolt_x + max(0.5 + bolt_dia + th, 0.5 * bolt_flat/2);
34 flats_y = open_gap/2 + th;
36 stride_z = hinge_unit*2 + hinge_z_gap*2;
37 total_z = hinge_units * stride_z - hinge_z_gap;
42 pin_flatten = pin_dia/2 * (1 - cos(45));
48 offset(r=-smooth_r) offset(delta=smooth_r) children(0);
51 module TubePlan(){ circle(r = tube_dia/2); }
52 module MainCirclePlan(){ circle(r = tube_dia/2 + th); }
54 module PlanWeldMainCircle(){
65 rotate(-135) square(100);
69 module MainPlan(flatten=false) {
73 translate([hinge_x, 0]) circle(r= hinge_o_r);
75 rectfromto([0, -flats_y],
79 rectfromto([0, -open_gap/2],
80 [max_x+1, +open_gap/2]);
81 translate([hinge_x, 0]) {
83 circle(r= hole_dia/2);
85 translate([ pin_flatten, 0 ])
86 square(center=true, [hole_dia, hole_dia + 1]);
93 translate([hinge_x, 0]) circle(r= hinge_o_r + d);
94 rectfromto([hinge_x*2, 0],
95 [max_x+10, -(tube_dia/2+th+10)]);
98 module MainPlanA(flatten){
105 module MainPlanB(flatten){
112 module HalfClampX(flatten=false){
114 translate([0,0, min_z]) {
115 linextr(0, total_z) mirror([0,1]) MainPlanB();
116 for (i=[0 : hinge_units-1]) {
117 translate([0,0, stride_z*i])
118 linextr(0, hinge_unit) MainPlanA(flatten);
122 translate([ bolt_x, 0, dz * total_z/4 ]) {
123 translate([0, -tube_dia/2, 0])
125 cylinder(r= bolt_dia/2, h= tube_dia);
126 translate([0, -flats_y, 0])
128 cylinder(r= bolt_flat/2, h= tube_dia/2);
134 module GeneralPlanDemo(){ ////toplevel
136 translate([0,0,-4]) color("red") Portion(1);
137 translate([0,0,-2]) color("grey") Portion(0);
139 translate([0, tube_dia*1.5]) {
143 // translate([max_x - hinge_x + 20, 0]) color("blue") MainPlanA();
146 module GeneralB(){ ////toplevel
150 module DummyA(){ ////toplevel
154 module Demo(){ ////toplevel
155 color("red") rotate([180,0,0]) GeneralB();
156 color("blue") DummyA();