Metal Work – Sanding Flap Disc

✅ Metal Work – Sanding Flap Disc (Quick Guide)

A Flap Disc is perfect for metal work because it can grind + sand + finish in one disc.

🔥 Best Uses

• ✅ Weld grinding & blending
• ✅ Edge smoothing / chamfering
• ✅ Surface cleaning & finishing
• ✅ Rust removal (light–medium)
• ✅ Stainless steel finishing (marine works)

✅ Flap Disc Types

• 1) Zirconia Flap Disc
• ⭐ Best for: stainless steel + heavy duty
• Fast cutting
• Long life ✅

2) Aluminum Oxide Flap Disc

• ✅ Best for: mild steel + general use
• Budget friendly

3) Ceramic Flap Disc

• ⭐ Best for: high performance
• Best for hard metal & heavy grinding
• Longer life than zirconia

✅ Best Grit Selection

• ✅ 40 grit → heavy grinding / weld removal
• ✅ 60 grit → general grinding + blending (most common)
• ✅ 80 grit → smooth finish
• ✅ 120 grit → fine finishing (before polish)
• For marine stainless steel:
• ✅ 60 → 80 → 120 grit gives best finish

✅ Common Sizes

• 4 inch / 4.5 inch (100/115mm) – most used
• 5 inch (125mm)
• 7 inch (180mm)