यद्घनानां तीक्ष्णेनोल्लिखन्ति तदुल्लेखनम् ॥ कZ_०२.१४.४७ ॥
yad ghanānāṃ tīkṣṇenollikhanti tad ullekhanam
固い品を鋭利な道具で削り取って材料を減らすことを削り取り(ullekhana)という。
Scraping can be hidden as routine finishing/engraving while steadily reducing weight or thickness without obvious breakage.