What are the challenges of machining drainage holes in granite outdoor trash cans?

Machining drainage holes in granite outdoor trash cans presents several significant challenges that require specialized expertise and equipment. The primary difficulty lies in granite's extreme hardness and abrasive nature, which rapidly wears down standard cutting tools. This necessitates the use of diamond-tipped drill bits and specialized CNC machinery, significantly increasing production costs. Furthermore, granite's natural brittleness creates a high risk of cracking or chipping during the drilling process, particularly near the edges of drainage holes. Achieving precise hole placement and consistent diameter requires advanced fixturing and cooling systems to manage the substantial heat generated during machining. The process also demands careful consideration of hole positioning to ensure effective water drainage while maintaining structural integrity. Additionally, production efficiency is compromised by the slow drilling speeds required to prevent thermal shock and material damage. These technical challenges make drainage hole machining one of the most complex aspects of manufacturing high-quality granite outdoor trash cans, requiring manufacturers to balance precision, structural stability, and economic viability throughout the fabrication process.