//$fn=100;
use </home/pelu/Nextcloud/oc.ludikovsky.name/Privat/3D Druck/lib/threads.scad>;

/*
difference() {
    cylinder(r=10, h=25, center=true);
    cylinder(r=8, h=25, center=true);
}
*/
difference(){
    cylinder(r=10, h=3);
    metric_thread(diameter=16, length=3, pitch=3, thread_size=1, internal=true);
}