This instance is from Wikipedia and may be reused beneath a CC BY-SA license. They can be sculpted into a variety of shapes in the course of this method, in some cases leading to deep thumb-print like indentations on their own surfaces named regmaglypts. From Wikipedia References in periodicals archive https://sculptedmdlakewood89909.educationalimpactblog.com/57900754/not-known-details-about-sculpted-md-lakewood