Marine Metal Grind & Finish

Marine Metal Grind & Finish – Sanding Flap Disc is an abrasive flap disc used for grinding + sanding + finishing metal surfaces in marine/boat work (especially stainless steel & aluminium).

✅ Used For

• Weld removal + blending
• Smoothing SS railings, ladders, fittings
• Removing rust/corrosion
• Surface prep before polishing / paint
• Getting a clean, smooth finish with less scratches

✅ Best Metals (Marine)

• Stainless Steel (SS 304 / SS 316)
• Aluminium
• Mild steel parts

✅ Common Sizes

• 100mm (4″)
• 115mm (4.5″)
• 125mm (5″)
• 180mm (7″)

✅ Best Flap Disc Types

• Zirconia Flap Disc
• Strong grinding + long life
• Best for stainless steel
• Ceramic Flap Disc
• Premium, fastest cutting
• Best for heavy weld grinding
• Aluminium Oxide Flap Disc
• General + low cost

✅ Recommended Grit

• 40 / 60 grit → Grinding & weld blending
• 80 grit → Smooth finishing
• 120 grit → Fine finish (pre-polish look)

✅ Flap Disc Shapes

• T27 (Flat) → General grinding & finishing
• T29 (Conical) → Better for edges & corners