https://openjscad.org/#https://gist.githubusercontent.com/paulhayes/f8b30552a71f7be5bcc562e30492c72d/raw/8dd451a46b84669eed42c0710495c9a86613fdeb/Cat%2520Bed%2520Stand.jscad

Cat Bed Stand.jscad

let sphereRadius = 500/2;
let baseRadius = 240/2;
let height = 26.4;

function main () {
    return cylinder({r1:baseRadius,r2:baseRadius-8,start:[0,0,0],end:[0,0,height],fn:120}).subtract(
        sphere({r:sphereRadius,fn:120}).translate([0,0,sphereRadius+0.6])    
    );
}