base_thick = 1.5;
d_minus = thick; // cca 45 deg
-center_hole_d = 3.5;
+center_hole_d = 4.8+0.5;
+center_hole_d2 = 2.5;
side_holes = 5;
side_hole_d = 5;
difference() {
body($fn = 128);
- translate([0, 0, -eps])
- cylinder(r = center_hole_d/2, h = thick + 2*eps, $fn = 128);
+ if (center_hole_d2 > 0) {
+ translate([0, 0, 0.5])
+ cylinder(r1 = center_hole_d/2, r2 = center_hole_d/2+0.2, h = thick + 2*eps, $fn = 8);
+ translate([0, 0, -eps])
+ cylinder(r = center_hole_d2/2, h = thick + 2*eps, $fn = 128);
+ } else {
+ translate([0, 0, -eps])
+ cylinder(r = center_hole_d/2, h = thick + 2*eps, $fn = 128);
+ }
if (side_holes > 0)
for (angle = [0:360/side_holes:360]) rotate([0, 0, angle+180/side_holes])
- translate([diameter/3 - d_minus + center_hole_d/2, 0, -eps])
+ translate([2*diameter/7 - d_minus + center_hole_d/2, 0, -eps])
cylinder(r = side_hole_d/2, h = thick + 2*eps, $fn=128);
if (base_thick)
difference() {