Aetig wrote > .. > myShape = difference() {cube(12, center=true); sphere(8);}; > myShape = union() {myShape; cylinder(15, 7);}; > .. The second myShape is unclear in meaning. If it's a new object it should have a new name. If it is a geometry-modifier (i'm trying to avoid the word "function") than it should have a new name as well, but then you can actually use it as a generic geometry modifier. module myShape() difference() {cube(12, center=true); sphere(8);}; module cylinderiser() union() {children(0); cylinder(15, 7);}; cylinderiser(){ myShape(); }; Openscad doesn't have variables, but it can pass modules to other modules. -- View this message in context: http://forum.openscad.org/Is-it-possible-to-use-shapes-as-variables-tp16223p16232.html Sent from the OpenSCAD mailing list archive at Nabble.com.