fix calculation of the mount geometric parameters, add calculation of slot depth for the mount, add small sloped ridge so that the capsule holder wall rests on the mount - we have to verify this can be printed

first_order.scad

@@ -97,9 +97,10 @@ slot_depth = connect == 1 ?
 	leg_thick * 1.5 : leg_thick;
 
 // microphone holder geometry
-capsule_sep_min = mic_radius * sin(tetra) - capsule_radius * cos(tetra);
-capsule_sep_max = capsule_sep_min + capsule_height * sin(tetra);
-capsule_bottom = mic_radius * cos(tetra) + capsule_radius * sin(tetra);
+capsule_sep_min = (mic_radius - capsule_height) * sin(tetra) - (capsule_radius + wall) * cos(tetra);
+capsule_sep_max = mic_radius * sin(tetra) - (capsule_radius + wall) * cos(tetra);
+capsule_bottom = mic_radius * cos(tetra) + (capsule_radius + wall) * sin(tetra);
+mount_slot_depth = ridge_length * cos(tetra);
 
 ////////
 // microphone capsule holder
@@ -190,18 +191,22 @@ module capsule (azimuth, elevation, mounts, twist) {
 
 // microphone mount
 //
+// angles: 
 // wall: thickness of cylinder wall
 // separation: height of mount with respect of the microphone assembly
 
-module mount (wall, separation) {
-	translate([0, 0, -(separation + 1)]) {
+module mount (angles, wall, separation) {
+	translate([0, 0, -(separation + 0.1)]) {
 		difference() {
 			union() {
 				// grips for the capsule holder ridge
-				for (rot = [0 : 180 : 360]) {
-					rotate([0, 0, rot - 45]) {
-						translate([-(capsule_sep_max / 2), (ridge_width / 2) + fit, -mount_height]) {
-							cube([capsule_sep_max, ridge_width / 2, mount_height]);
+				for (rot = angles) {
+					rotate([0, 0, rot]) {
+						translate([-capsule_sep_max, -(ridge_width - fit / 2), -mount_height]) {
+							cube([capsule_sep_max, ridge_width * 2 - fit, mount_height]);
+                            rotate([0, -(90 - tetra), 0]) {
+                                cube([capsule_sep_max, ridge_width * 2 - fit, mount_height * sin(tetra)]);
+                            }
 						}
 					}
 				}
@@ -209,15 +214,24 @@ module mount (wall, separation) {
 					cylinder(r = mount_radius + wall, h = mount_height, $fn = facets);
 				}
 			}
-			// make the hole for the mount
+			// make the hole for the mount (* 1.5 to cut the ridge as well)
 			translate([0, 0, -mount_height]) {
-				cylinder(r = mount_radius, h = mount_height, $fn = facets);
+				cylinder(r = mount_radius, h = mount_height * 1.5, $fn = facets);
+			}
+            // cut the outside of the sloped ridge
+			translate([0, 0, -mount_height]) {
+                difference() {
+                    cylinder(r = capsule_sep_max + mount_height * 1.5, h = mount_height * 1.5, $fn = facets);
+                    cylinder(r = capsule_sep_max, h = mount_height * 1.5, $fn = facets);
+                }
 			}
 			// and cut a slot for the ridges in the wall of the cylinder
-			rotate([0, 0, -45]) {
-				translate([-(capsule_sep_max / 2), -ridge_width + 4 * fit, -mount_height / 2]) {
-					cube([capsule_sep_max, ridge_width + 2 * fit, mount_height]);
-				}
+            for (rot = angles) {
+                rotate([0, 0, rot]) {
+                    translate([-capsule_sep_max * 2, -ridge_width + 4 * fit, -mount_slot_depth]) {
+                        cube([capsule_sep_max * 2, ridge_width + 2 * fit, mount_height]);
+                    }
+                }
 			}
 		}
 	}
@@ -233,7 +247,7 @@ if (rendermic == 1) {
 	capsule(-135, elev, [-120, 0, 120], 60);
 	capsule(135, -elev, [-120, 120], 0);
 	// the mount
-	mount(1, capsule_bottom);
+	mount([-45, 135], 1, capsule_bottom);
 }
 
 // print all the parts separately