Different applications demand different configuration priorities. Below we provide targeted recommendations based on common use cases, acknowledging that edge cases and specialized requirements may warrant deviations from these guidelines.
Woodworking & Cabinetry: Start with aluminum oxide 80-120 grit for stock removal and shaping, progress to 150-180 for sanding between coats, and finish with 220+ for final smoothing. Hook & Loop backing on 5-inch discs offers the best versatility for mixed operations. For production cabinet shops, consider PSA discs in consistent grits to reduce changeover time. Avoid silicon carbide on wood—it's designed for harder materials and will clog prematurely [2][4].
Metal Fabrication: Stainless steel requires zirconia or ceramic abrasives to prevent glazing and heat buildup. Start with 60-80 grit for weld removal, progress to 120 for blending, and use 180-220 for final finish preparation. For carbon steel and mild steel, aluminum oxide is cost-effective for most operations. 7-inch discs on angle grinders handle heavy stock removal; 5-6 inch discs on orbital sanders work for finer finishing. Always use appropriate safety equipment—metal sanding generates hazardous dust [5].
Automotive Refinishing: Body shops typically use 6-inch (150mm) discs with standardized dust extraction. PSA backing is common for production efficiency. Grit progression: 80-120 for paint removal and body filler shaping, 180-220 for primer sanding, 320-400 for final prep before paint. Ceramic abrasives justify their cost in high-volume shops through extended life and consistent cut rates. Match hole patterns to your sanding equipment—mismatched patterns compromise dust collection [3].
DIY & Home Maintenance: For general homeowners, a mixed assortment (40-220 grit) in aluminum oxide with Hook & Loop backing provides maximum flexibility. 5-inch discs fit most consumer-grade random orbital sanders. Focus on mid-range quality—ultra-cheap discs frustrate with premature failure, but premium features (ceramic abrasives, specialized backings) offer minimal benefit for occasional use. Consider buying smaller quantities of multiple grits rather than bulk single-grit packs [4][7].