I was frustrated by my vacuum cleaner nozzles which did not brush the crumbs off my couch and always got stuck. So I made this nozzle with solid teeths instead of one brush. It brushes the tissues and allows air to flow between the teeths to avoid it to stay stuck (if the velvet is stretched enough). V2 : added a reenforcement to avoid cracks on the top V3 : whole part is now thicker