include <BOSL2/std.scad>
include <BOSL2/screws.scad>

$slop = 0.05;
$fn=360;

d = 10;
h = 7;

nut("M6,20", thickness=20, left_handed=true);
// spheroid(d=10);
up(h/2) difference() {
    cyl(d=d, h=h) down(h/2) spheroid(d=d);
    cyl(d1=0, d2=d, h=h + 0.1);
}