First prototype

constants.scad

@@ -5,8 +5,11 @@ tube_outer_diameter = 76;
 
 // Lid
 lid_height = 10;
-latch_width = 10;
-latch_height = 4;
+lid_depth = 7.5;
+latch_width = 20;
+latch_height = 5;
+brim_height = 2.5;
+
 
 groove_depth = 7.5;
 groove_length = 50;
@@ -16,4 +19,4 @@ bumper_height = 15;
 bumper_diameter = 85;
 // Flat surface starts after bumper_edge_radius from the outside
 bumper_edge_radius = bumper_diameter - tube_outer_diameter - 4;
-bumper_tube_depth = 4;
+bumper_tube_depth = 5;

lid.scad

@@ -1,15 +1,23 @@
 include <constants.scad>;
 include <bayonetmount.scad>;
+include <support.scad>;
 
-delta = 0.2;
+delta = 0.5;
 wall_thickness = 5;
 
 difference() {
-	lid(tube_outer_diameter - delta * 2, 
-		tube_inner_diameter - delta * 2,
-		latch_width - delta,
-		latch_height - delta,
-		lid_height);
+	union() {
+		lid(tube_outer_diameter - delta * 2, 
+			tube_inner_diameter - delta * 2,
+			latch_width - delta,
+			latch_height - delta,
+			lid_height - delta);
+		
+		translate([0, 0, lid_height - brim_height / 2])
+		cylinder(r = tube_outer_diameter / 2, 
+					h = brim_height,
+					center = true);
+	}
 	
 	hull() {
 			pos = groove_length / 2 - groove_depth;
@@ -30,4 +38,11 @@ difference() {
 					lid_height],
 					center = true);
 	}
+}
+
+translate([0, 0, lid_height /2]) {
+	support(tube_outer_diameter, lid_height);
+	support(tube_outer_diameter * 0.96, lid_height);
+	
+	support(tube_inner_diameter * 0.75, lid_height);
 }

support.scad

@@ -0,0 +1,12 @@
+module support(outer_diameter, height) {
+	inner_diameter = outer_diameter - 0.5;
+	
+	difference() {
+		cylinder(r = outer_diameter / 2, 
+					h = height,
+					center=true);
+		cylinder(r = inner_diameter / 2, 
+					h = height * 1.01, 
+					center = true);
+	}
+}

top.scad

@@ -1,19 +1,6 @@
 include <constants.scad>;
 include <bayonetmount.scad>;
-
-
-module support(outer_diameter, height) {
-	inner_diameter = outer_diameter - 0.5;
-	
-	difference() {
-		cylinder(r = outer_diameter / 2, 
-					h = height,
-					center=true);
-		cylinder(r = inner_diameter / 2, 
-					h = height * 1.01, 
-					center = true);
-	}
-}
+include <support.scad>;
 
 
 
@@ -26,7 +13,7 @@ difference() {
 			sphere(r = bumper_edge_radius, center = true);
 		}
 		
-	translate([0, 0, bumper_height - lid_height])
+	translate([0, 0, bumper_height - lid_depth])
 		hole(tube_outer_diameter, 
 			tube_inner_diameter,
 			latch_width,
@@ -49,5 +36,5 @@ difference() {
 translate([0, 0, bumper_tube_depth / 2])
 	support(tube_inner_diameter + 0.5, bumper_tube_depth);
 
-translate([0, 0, bumper_height - lid_height + latch_height / 2])
+translate([0, 0, bumper_height - lid_depth + latch_height / 2])
 	support(tube_inner_diameter + 0.5, latch_height);