read it

README.md

@@ -0,0 +1 @@
+# open source 3d printable hinge notebook

notebook.scad

@@ -1,5 +1,5 @@
-$fs = 0.01;
-$fa = 0.01;
+$fs = 0.1;
+$fa = 0.1;
 
 
 // A5 = 148
@@ -8,37 +8,77 @@ page_size_height = sqrt(2)*page_size_width;
 
 notebook_thickness = 3;
 hinge_radius = 10;
+hinge_hole_radius = 6;
 number_of_hinge_segments = 5;
 hinge_gap = 2;
+notebook_open_angle = 0; // [0:180]
+// notebook_open_angle = $t*180;
+
+cover_material_colour = [128/255, 165/255, 0];
+addtional_cover_material_colour = [255/255, 165/255, 0];
+hinge_colour_even = [255/255, 0, 0];
+hinge_colour_odd = [255/255, 0, 1];
+
+hinge_segments_length = (page_size_height - hinge_gap * (number_of_hinge_segments - 1)) / number_of_hinge_segments;
+hinge_offset = [-page_size_width/2-hinge_radius, page_size_height / 2 - hinge_segments_length / 2, hinge_radius - notebook_thickness/2];
+
+function ALTERNATE(i, thing_1, thing_2) = (thing_1*(i % 2) + thing_2*(-(i % 2)+1));
 
 echo(str("page size = ", page_size_height, "x", page_size_width, "mm"));
 
 
-
-
-
-
+translate([page_size_width/2+hinge_radius, 0, -hinge_radius+notebook_thickness/2])
 union(){
-    color([0/255, 20/255, 0/255]) 
+    color(cover_material_colour) 
     cube(size=[page_size_width, page_size_height, notebook_thickness], center=true);
 
-    color([128/255, 128/255, 10/255])
+    color(addtional_cover_material_colour)
     translate([-page_size_width/2 - hinge_radius/2 , 0, 0])        
     cube(size=[hinge_radius, page_size_height, notebook_thickness], center=true);
+
+    translate(hinge_offset){
+        for (i=[1:2:number_of_hinge_segments - 1]) {
+            translate([0, -i*(hinge_segments_length+hinge_gap), 0]) 
+            rotate([90, 0, 0])
+            color(hinge_colour_odd) 
+            difference() {
+                cylinder(r=hinge_radius, h=hinge_segments_length, center=true);
+                cylinder(r=hinge_hole_radius, h=hinge_segments_length*2, center=true);
+            }
+        }
+    }
+}
+
+rotate([0, -notebook_open_angle, 0])
+translate([page_size_width/2+hinge_radius, 0, -hinge_radius+notebook_thickness/2])
+union(){
+    translate([0, 0, hinge_radius*2 - notebook_thickness]){
+        color(cover_material_colour) 
+        cube(size=[page_size_width, page_size_height, notebook_thickness], center=true);
+
+        color(addtional_cover_material_colour)
+        translate([-page_size_width/2 - hinge_radius/2 , 0, 0])        
+        cube(size=[hinge_radius, page_size_height, notebook_thickness], center=true);
+    }
+
+    translate(hinge_offset){
+        for (i=[0:2:number_of_hinge_segments - 1]) {
+            translate([0, -i*(hinge_segments_length+hinge_gap), 0]) 
+            rotate([90, 0, 0])
+            color(hinge_colour_even) 
+
+            difference() {
+                cylinder(r=hinge_radius, h=hinge_segments_length, center=true);
+                cylinder(r=hinge_hole_radius, h=hinge_segments_length*2, center=true);
+            }
+        }
+    }
+
 }
 
 
-translate([0, 0, hinge_radius*2 - notebook_thickness])     
-union(){
-    color([0/255, 20/255, 0/255]) 
-    cube(size=[page_size_width, page_size_height, notebook_thickness], center=true);
-
-    color([128/255, 128/255, 10/255])
-    translate([-page_size_width/2 - hinge_radius/2 , 0, 0])        
-    cube(size=[hinge_radius, page_size_height, notebook_thickness], center=true);
-}
 
 
-translate([-page_size_width/2-hinge_radius, 0, hinge_radius - notebook_thickness/2])
-rotate([90, 0, 0])
-cylinder(r=hinge_radius, h=10, center=true);
+
+
+