[WIP] fs-cover.scad

fs-cover-cat.scad

@@ -0,0 +1,91 @@
+/**
+ * This requires
+ * https://files.printables.com/media/prints/451501/stls/4205518_58958bba-4c36-4995-b4e7-da5abd1ba821/loveboard-cover-r2.stl
+ * 
+ * to be placed under `./stls/LoveBoard-cover-R2.stl` in order to work
+ * but it needs a run in meshlabs uniform fcae orientation filter for
+ * openscad to be happy with it
+ * 
+ * if rendering is missing the ear infill, `Design` > `Flush Caches`
+ * may be required.
+ */
+ 
+include <headband.scad>
+use <catear_headband.scad>
+
+HEIGHT=11;
+THICKNESS=1;
+SIDE_LEN=12;
+BEND_FACTOR=0.15;
+STRETCH_FACTOR=1.2;
+CHAMFER=0;
+CHAMFER_SHAPE="none";
+DEBUG=false;
+
+FILL=true;
+FILL_HEIGHT_FACTOR=0.9;
+FILL_HEIGHT_FALLOFF_STEP=0;
+FILL_HEIGHT_FALLOFF_FACTOR=0.98;
+FILL_HEIGHT_FALLOFF_EXPONENT_FACTOR=3;
+FILL_STEP=0.5;
+
+module fs_cover() {
+  translate([2.5, 0, 0])
+  rotate(180, [0, 0, 1])
+    translate([0, 0, 17])
+      rotate(90, [1, 0, 0])
+        import("stls/fs-cover.stl");  
+}
+
+module fs_cover_cat() {
+  $fn=90;
+  union() {
+    difference() {
+      union() {
+        for (i=[-1,1])
+          scale([i, 1, 1]) 
+            translate([-13, 4, 5.5])
+              rotate(-80) {
+                union() catear(
+                  height=HEIGHT,
+                  thickness=THICKNESS,
+                  side_len=SIDE_LEN,
+                  bend_factor=BEND_FACTOR,
+                  stretch_factor=STRETCH_FACTOR,
+                  debug=DEBUG,
+                  chamfer=CHAMFER,
+                  chamfer_shape=CHAMFER_SHAPE
+                );
+                if (FILL) {
+                  echo("BEGIN FILL");
+                  for (i=[FILL_STEP:FILL_STEP:(SIDE_LEN-FILL_STEP)])
+                    color([0, (256-i*8)/256,0]) {
+                      fill_height=(
+                        HEIGHT * FILL_HEIGHT_FACTOR
+                      * pow(FILL_HEIGHT_FALLOFF_FACTOR,
+                          (SIDE_LEN-1-i)*FILL_HEIGHT_FALLOFF_EXPONENT_FACTOR)
+                      - ((SIDE_LEN-1-i)*FILL_HEIGHT_FALLOFF_STEP)
+                      );
+                      echo([i, fill_height]);
+                      translate([0, 0, (fill_height-HEIGHT)/2])
+                      union() catear(
+                        height=fill_height,
+                        thickness=THICKNESS,
+                        side_len=i,
+                        bend_factor=BEND_FACTOR,
+                        stretch_factor=STRETCH_FACTOR,
+                        chamfer=0,
+                        chamfer_shape=CHAMFER_SHAPE
+                      );
+                    }
+                  echo("END FILL");
+                }
+              }
+      }
+      scale(0.9999) hull() fs_cover();
+    }
+    color("red") fs_cover();
+  }
+}
+
+fs_cover_cat();

globals.scad

@@ -12,7 +12,7 @@ RAKE_WIDTH=1;
 RAKE_STRETCH=1;
 RAKE_CHAMFER=0.5;
 CHAMFER=1;
-CHAMFER_SHAPE="curve";
+CHAMFER_SHAPE="cone";
 
 INSERTICLE_X = 4.6;
 INSERTICLE_Y = 7.4;

pressfit_headband.scad

@@ -2,32 +2,69 @@ include <globals.scad>
 
 use <headband.scad>
 
+RENDER_PLA = true;
+RENDER_PETG = true;
+
 module inserticle() {
-    cube([INSERTICLE_X, INSERTICLE_Y, INSERTICLE_Z], center=true);
+  cube([INSERTICLE_X, INSERTICLE_Y, INSERTICLE_Z], center=true);
 }
 
-module pressfit_headband(debug=DEBUG, size=SIZE, height=HEIGHT, thickness=THICKNESS, part=PART, stretch_len=STRETCH_LEN, tip_len=TIP_LEN, tip_bend=TIP_BEND) {
-    union() {
-        color("pink") { $a=48;
-            rotate( $a, [0, 0, 1]) {
-                translate([-size-4, 0,]) rotate(90, [0, 1, 0]) inserticle();
-                translate([-size-3, 0,]) rotate(90, [0, 1, 0]) inserticle();
-            }
-            rotate(-$a, [0, 0, 1]) {
-                translate([-size-4, 0,]) rotate(90, [0, 1, 0]) inserticle();
-                translate([-size-3, 0,]) rotate(90, [0, 1, 0]) inserticle();
-            }
+module anchored_inserticle() {
+  translate([-1, 0, 0]) rotate(90, [0, 1, 0]) inserticle();
+  rotate(90, [0, 1, 0]) {
+    cube([INSERTICLE_X-2*CHAMFER, INSERTICLE_Y, INSERTICLE_Z], center=true);
+    translate([0, 0, INSERTICLE_Z/2+0.5])
+      cube([INSERTICLE_X/2, INSERTICLE_Y+2, 1], center=true);
+  }
+}
+
+module pla_parts(size, a) {
+  color("pink") {
+    for (i=[-1, 1]) {
+      union() {
+        rotate(i*a, [0, 0, 1]) {
+          translate([-size-3, 0, 0]) anchored_inserticle();
+//          translate([-size-4, 0,]) rotate(90, [0, 1, 0]) inserticle();
+//          translate([-size-3, 0,]) rotate(90, [0, 1, 0]) {
+//            cube([INSERTICLE_X-2*CHAMFER, INSERTICLE_Y, INSERTICLE_Z], center=true);
+//            translate([0, 0, INSERTICLE_Z/2+0.5])
+//              cube([INSERTICLE_X/2, INSERTICLE_Y+2, 1], center=true);
+//          }
         }
-        headband(
-            size=size,
-            height=height,
-            thickness=thickness,
-            part=part,
-            stretch_len=stretch_len,
-            tip_len=tip_len,
-            tip_bend=tip_bend
-        );
-    };
+      }
+    }
+  }  
+}
+
+module petg_parts(size, height, thickness, part, stretch_len, tip_len, tip_bend) {
+  headband(
+    size=size,
+    height=height,
+    thickness=thickness,
+    part=part,
+    stretch_len=stretch_len,
+    tip_len=tip_len,
+    tip_bend=tip_bend
+  );  
+}
+
+module pressfit_headband(debug=DEBUG, size=SIZE, height=HEIGHT, thickness=THICKNESS, part=PART,  stretch_len=STRETCH_LEN, tip_len=TIP_LEN, tip_bend=TIP_BEND, a=48) {
+  if (RENDER_PLA && RENDER_PETG) {
+    union() {
+      petg_parts(size, height, thickness, part, stretch_len, tip_len, tip_bend);
+      pla_parts(size, a);
+    }
+  } else {
+    if (RENDER_PETG) {
+      difference() {
+        petg_parts(size, height, thickness, part, stretch_len, tip_len, tip_bend);
+        pla_parts(size, a);
+      }
+    }
+    if (RENDER_PLA) {
+      pla_parts(size, a);
+    }
+  }
 }
 
 pressfit_headband();