Added Back cover

openscad/Back.scad

@@ -0,0 +1,63 @@
+x_size = 75;
+y_size = 40;
+z_size = 6;
+wall_size = 1;
+hole_rad = 2;
+filament_x = 10;
+filament_size = 2;
+
+union()
+{
+	difference()
+	{
+		// Main
+		cube([x_size, y_size, z_size], center = true);
+
+		// Hollow
+		translate([0, 0, wall_size])
+		{
+			cube([x_size - 2 * wall_size, y_size - 2 * wall_size, z_size], center = true);
+		}
+
+		// Fillament Hole
+		translate([filament_x, 0, wall_size])
+		{
+			cube([filament_size, y_size + 1, z_size], center = true);
+		}
+	}
+
+	// Hole Mounts
+	for (i = [-1:1:1])
+	{
+		translate([i * 32, ((i == 0) ? 1 : 0) * 29 - 14.5, 0])
+		{
+			difference()
+			{
+				cylinder(z_size - 1, hole_rad + 1, hole_rad + 1, $fn = 360, center = true);
+				translate([0, 0, wall_size])
+				{
+					cylinder(z_size - 1, hole_rad, hole_rad, $fn = 360, center = true);
+				}
+			}
+		}
+	}
+
+	// Bearing Mount
+	translate([3, 0, 0])
+	{
+		cylinder(z_size, 2, 2, $fn = 360, center = true);
+	}
+
+	// Left Walls for fillament
+	for (i = [-1:2:1])
+	{
+		translate([filament_x + i * ((filament_size + wall_size) / 2), 0, 0])
+		{
+			difference()
+			{
+				cube([wall_size, y_size, z_size - 1], center = true);
+				cube([wall_size + 1, 5.625 + i * 0.875, z_size], center = true);
+			}
+		}
+	}
+}