--- /dev/null
+eps = 0.01;
+infty = 200;
+
+wall = 1.5;
+
+tube_d = 8.0 + 0.5;
+
+clip_w = 6;
+
+slot_w = 3;
+slot_angle = 180+45;
+
+support_l = tube_d/2 + 10;
+
+module clip(support_zoff) {
+difference() {
+ union() {
+ // clip cylinder
+ cylinder(r = tube_d/2 + wall, h = clip_w);
+ // under the servo
+ hull() {
+ translate([0, tube_d/2+support_zoff - wall, 0])
+ cube([tube_d/2+wall, wall, clip_w]);
+ translate([support_l-wall, tube_d/2+support_zoff - wall, 0])
+ cube([wall, wall, clip_w/2]);
+ }
+ // vertical strut
+ hull() {
+ translate([support_l - eps, tube_d/2+support_zoff-wall, 0])
+ cube([eps, wall, wall]);
+ translate([0, -tube_d/2-wall/2, 0])
+ cube([eps, tube_d+wall/2+support_zoff, wall]);
+ }
+
+ }
+
+ // fuse tube
+ translate([0, 0, -eps])
+ cylinder(r = tube_d/2, h = clip_w + 2*eps);
+
+ // slot
+ rotate([0, 0, slot_angle])
+ translate([0, -slot_w/2, -eps])
+ cube([tube_d, slot_w, clip_w + 2*eps]);
+}
+}
+
+// clip(support_zoff = -2);
+for (x = [-1, 1]) scale([x, 1, 1]) translate([tube_d, tube_d, 0])
+ clip(support_zoff = wall);
+
+for (x = [-1, 1]) scale([x, -1, 1]) translate([tube_d, tube_d, 0])
+ clip(support_zoff = wall-3);