The methods involve using a tool to cut or form multiple optical element shaped cavities in a surface of a substrate without rotating the tool or substrate during the cutting or forming process. At least one permanent magnet is arranged in a connecting area between the internal pole and the external pole. The first jaw has a first plane defined on a front end thereof, two first recesses arranged on a rear end of the first plane and a first front end of the V-shaped retaining fringe, and an arcuate projection defined between the two first recesses.