some tolerance changes for better fit of the parts, fix shock mount eyelet, add hexagonal screw head insert to the stand mount eyelet so that the screw locks properly

SpHEAR_common.scad

@@ -105,8 +105,7 @@ ridges = 1;
 // adjustment for the inner radius of the capsule holder
 //   measured inside diameter of a trial print was around 7.5 to 8.2 
 //   instead of 10, capsule diameter was 9.99)
-// 0.1 -> 0.08: Ultimaker 2 + Extended plus APL (2016.06.17)
-fudge = 0.08;
+fudge = 0.12;
 
 // adjustment for fit of slots in connection legs and mount
 // 0.1: initial setting
@@ -329,8 +328,14 @@ module shock_mount_internal_ring(height, xradius, yradius, corner, gap, lip) {
                                 cube([slot_w - minkr, 10, slot_o - minkr]);
                                 rotate([90, 0, 0]) cylinder(r = minkr, h = 1, $fn = facets);
                             }
-                            translate([slot_w / 2, -2, 0]) {
-                                cube([slot_w / 2, 10, 10]);
+                        }
+                    }
+                    // cut holes in slots
+                    rotate([0, 0, -45]) {
+                        translate([-thin_mint, 0, slot_o]) {
+                            for (m = [0, 1]) mirror([0, m, 0]) {
+                                // this should be a pizza slice, not a cube
+                                cube([5.0, xradius + gap + 3 * wall + 5.0, height]);
                             }
                         }
                     }
@@ -405,14 +410,14 @@ module shock_mount_external_ring(height, xradius, yradius, corner, gap, lip) {
         }
     }
     // connection to hub
-    translate([xradius + mount_corner + ring_wall + ring_arm_gap, -2, 0]) {
+    translate([xradius + mount_corner + ring_arm_gap, -2, 0]) {
         cube([8, 4, ring_ext_height]);
     }
     // rotating mount
     o_rad = 8;
     i_rad = 3;
     rotate([0, 90, -90]) {
-        translate([-o_rad, xradius + mount_corner + ring_wall + ring_arm_gap + o_rad + ring_wall / 2 + 4, -2]) {
+        translate([-o_rad, xradius + mount_corner + ring_arm_gap + o_rad + ring_wall / 2 + 4, -2]) {
             shock_mount_ring(o_rad, i_rad, ring_wall);
         }
     }
@@ -458,11 +463,11 @@ module shock_mount_stand(height, wall, stand_wall) {
         translate([0, 0, height]) {
             difference() {
                 cylinder(h = mic_mount_radius,
-                        r1 = mic_mount_radius + mount_wall + wall + mic_mount_fit, r2 = 5, $fn = facets);
+                        r1 = mic_mount_radius + mount_wall + wall + mic_mount_fit, r2 = 6.5, $fn = facets);
                 cylinder(h = mic_mount_radius,
-                        r1 = mic_mount_radius + mount_wall + mic_mount_fit, r2 = 1, $fn = facets);
+                        r1 = mic_mount_radius + mount_wall + mic_mount_fit, r2 = 0.1, $fn = facets);
             }
-            translate([0, 0, mic_mount_radius - 1]) {
+            *translate([0, 0, mic_mount_radius - 1]) {
                 cylinder(h = 1, r = 5, $fn = facets);
             }
         }
@@ -470,11 +475,25 @@ module shock_mount_stand(height, wall, stand_wall) {
         o_rad = 8;
         i_rad = 3;
         thk = 4;
+        // screw head dimensions
+        head_thick = 3.0;
+        head_diam = 9.2;
         for (m = [0, 1]) mirror([0, m, 0]) {
             rotate([90, 90, 0]) {
                 translate([-(height + o_rad + 6), 0, thk/2 + fit]) {
-                    rotate([0, 0, 45])
-                        shock_mount_ring(o_rad, i_rad, thk);
+                    rotate([0, 0, 45]) {
+                        if (m == 0) {
+                            difference() {
+                                shock_mount_ring(o_rad, i_rad, thk + head_thick / 3);
+                                // recessed hexagonal screw head
+                                translate([0, 0, thk - head_thick + head_thick / 2]) {
+                                    rotate([0, 0, 15]) cylinder(h = head_thick, r = head_diam / 2, $fn = 6);
+                                }
+                            }
+                        } else {
+                            shock_mount_ring(o_rad, i_rad, thk + head_thick / 3);
+                        }
+                    }
                 }
             }
         }

TinySpHEAR_common.scad

@@ -126,8 +126,7 @@ leg_angles_bot =
 // adjustment for the inner radius of the capsule holder
 //   measured inside diameter of a trial print was around 7.5 to 8.2 
 //   instead of 10, capsule diameter was 9.99)
-// 0.1 -> 0.08: Ultimaker 2 + Extended plus APL (2016.06.17)
-fudge = 0.08;
+fudge = 0.12;
 
 // adjustment for fit of slots in connection legs and mount
 // 0.1: initial setting

TinySpHEAR_mount_pcb.scad

@@ -87,7 +87,7 @@ capsule_cable_diam = 1.7;
 mount_lip = 6.0;
 
 // lip fit for flares
-lip_fit = 0.15;
+lip_fit = 0.05;
 
 // capsule array mount, height of flare and stalk
 flare_height = 50;