using mechanical means, e.g. shaping guides (shaping dies for edge-defined film-fed crystal growth C30B15/34)

Full Title

Single-crystal growth by pulling from a melt, e.g. Czochralski method (under a protective fluid C30B27/00) > Controlling or regulating (controlling or regulating in general G05) > Stabilisation or shape controlling of the molten zone near the pulled crystal; Controlling the section of the crystal > using mechanical means, e.g. shaping guides (shaping dies for edge-defined film-fed crystal growth C30B15/34)