OpenSCAD Tutorial Sphere - Beginnners

A detailed OpenSCAD Sphere Tutorial for beginners.
This tutorial demonstrates the use of the sphere() primitive

[@openaccess9809]

Thanks for such great tutorials. Looking forward to seeing one on how to implement modules like your "stack"

[@4funrc11]

Keep 'em coming... Thx!

[@beemanminnesota7683]

I got a question for you, why does this not work?
cylinder (20, 15, 15, center = true);
difference () {translate ([ 14.7, 0, 0]) difference () {sphere ( r=2);
translate ([ 1, 0, 0]) sphere ( r=2);}}
This should remove a half sphere shape from the cylinder, but does not.

[@Schlohmotion]

I see the mistake. Mind the following example:
difference(){ //no seicolon
object1;
object2;
}
//difference takes the first object (object1) and removes objects that follow (object2).
//In the following example, I remove multiple objects (obj2, obj3 and obj4) from obj1:
difference(){
object1;
object2;
object3;
object4;
}