Added bottom model

openscad/bot.scad

@@ -0,0 +1,121 @@
+size_wall = 1.5;
+size_floor = size_wall * 3;
+
+size_x = 105;
+size_y = 50;
+size_z = 7;
+
+hole_dist_x = 35;
+hole_dist_y = 20.5;
+
+hole_rad = 3 / 2;
+
+slide_x = 30;
+slide_y = 35;
+
+module blind_hole(r_top = 1.5, r_bot = 3, z_size = 3, seg = 60)
+{
+	h = r_bot > r_top ? r_bot - r_top : r_top - r_bot;
+	union()
+	{
+		// Big/small
+		cylinder(h, r_bot, r_top, $fn = seg, center = true);
+
+		translate([0, 0, h/2 + (z_size - h)/4])
+			cylinder((z_size - h)/2, r_top, r_top, $fn = seg, center = true);
+
+		translate([0, 0, -h/2 - (z_size - h)/4])
+			cylinder((z_size - h)/2, r_bot, r_bot, $fn = seg, center = true);
+	}
+}
+
+module slide_box_top_y(x, y, lip)
+{
+	difference()
+	{
+		cube([x, y, lip * 3], center = true);
+
+		cube([x - lip * 4, y - lip * 4, lip * 3 + 1], center = true);
+
+		translate([0, -(y / 2 - lip), lip])
+		{
+			cube([x - lip * 4, lip * 2 + 1, lip * 3], center = true);
+		}
+
+		for (x_dir = [-1:2:1])
+		{
+			//translate([(x - lip * 4) / 2 * x_dir, -lip * 2, lip / 2])
+			translate([(x - lip * 4) / 2 * x_dir, -lip * 2, lip / 2])
+			rotate([-90, 0, 0])
+			linear_extrude(y, center = true)
+			{
+				polygon([[0, 0], [0, lip], [lip * x_dir, lip]]);
+			}
+		}
+	}
+}
+
+difference()
+{
+	union()
+	{
+		difference()
+		{
+			// Main block
+			cube([size_x + size_wall * 2 + 1, size_y + size_wall * 2 + 1, size_z + size_floor], center = true);
+
+			// Hollow
+			translate([0, 0, size_floor])
+			{
+				cube([size_x + 1, size_y + 1, size_z + size_floor], center = true);
+			}
+
+			// Cut slide cover
+			translate([-slide_x/2 + (size_x + size_wall * 2 + 1) / 2, -slide_y/2 + (size_y + size_wall * 2 + 1) / 2, size_floor/2 - (size_z + size_floor) / 2])
+			{
+				cube([slide_x, slide_y, size_floor], center = true);
+			}
+		}
+
+		// Mounts
+		for (x = [-1:2:1])
+		{
+		for (y = [-1:2:1])
+		{
+			translate([x * hole_dist_x, y * hole_dist_y, 0])
+			{
+				difference()
+				{
+					cylinder(size_z + size_floor - 2, hole_rad + size_wall, hole_rad + size_wall, $fn = 60, center = true);
+					cylinder(size_z + size_floor + 1, hole_rad, hole_rad, $fn = 60, center = true);
+				}
+			}
+		}
+		}
+
+		// Add slide cover
+		translate([-slide_x/2 + (size_x + size_wall * 2 + 1) / 2, -slide_y/2 + (size_y + size_wall * 2 + 1) / 2, size_wall * 3 / 2 - (size_z + size_floor) / 2])
+		rotate([180, 0, -90])
+		{
+			slide_box_top_y(x = slide_y, y = slide_x, lip = size_wall);
+		}
+	}
+
+	// Cut screw holes
+	for (x = [-1:2:1])
+	{
+	for (y = [-1:2:1])
+	{
+		translate([x * hole_dist_x, y * hole_dist_y, size_floor/2 - (size_z + size_floor)/2])
+		{
+			blind_hole(r_top = hole_rad, r_bot = hole_rad * 2, z_size = size_floor);
+		}
+	}
+	}
+
+	// Cut bit of lip and extra screw
+	translate([-slide_x/2 + size_wall/2 + (size_x + size_wall * 2 + 1) / 2, -slide_y/2 + (size_y + size_wall * 2 + 1) / 2, 0])
+	{
+		cube([slide_x - size_wall * 3, slide_y - size_wall * 4, size_z + size_floor + 1], center = true);
+	}
+}