eps = 0.01;
infty = 200;

wall = 1.0;

tube_d = 8.0 + 0.5;

slot_w = 3;

servo_w = 12.5+0.5;
servo_side_l = 5 - 0.5;

clip_w = servo_side_l + wall;

servo_zoff = 14 + 2.0 + tube_d/2;
servo_screw_hole = 1.2;
servo_slot_z = 2 + 0.5;

module clip() {
difference() {
	hull() {
		// clip cylinder
		cylinder(r = tube_d/2 + wall, h = clip_w);
		// under the servo
		translate([-servo_w/2-wall, servo_zoff-wall, 0])
			cube([servo_w+2*wall, servo_slot_z + 2*wall, clip_w]);
	}

	// fuse tube
	translate([0, 0, -eps])
		cylinder(r = tube_d/2, h = clip_w + 2*eps);

	// slot
	translate([-slot_w/2, -tube_d,, -eps])
		cube([slot_w, tube_d, clip_w + 2*eps]);

	// servo
	translate([-servo_w/2, servo_zoff, wall])
		cube([servo_w, servo_slot_z, clip_w]);

	// screw hole
	translate([0, 0, wall + 0.6*servo_side_l])
	rotate([-90, 0, 0])
		cylinder(r = servo_screw_hole/2, h = infty, $fn = 6);
}
}

for (x = [-1, 1]) scale([x, 1, 1])
translate([servo_w/2+2*wall, 0, 0])
clip();