브라보! 특별한 드릴 비트: 카운터 싱크 드릴 비트
Using a countersink drill bit effectively prevents tearing, reduces the possibility of wood splitting, and allows screws to make better contact with the wood. 게다가, it makes DIY projects look more professional. Countersink bits have two purposes: 첫 번째, they drill a pilot hole in the workpiece. A pilot hole is a small hole in …