320 Grit Sanding Discs: Ultra-Fine Surface Prep for a Flawless Finish

320 grit sanding discs are the ultimate choice for ultra-fine finishing and between-coat preparation. Included in the 5-Inch 8-Hole Sanding Discs, Hook & Loop, Assorted Grit (50-Pack), they provide a silky-smooth surface ideal for high-end woodworking, automotive detailing, and delicate finishing work.

Why 320 Grit is a Finishing Essential

This ultra-fine grit removes the smallest imperfections while leaving a surface that’s ready for the final coat of paint, stain, or clear finish. It’s perfect for detail work where every touch matters.

Best Uses for 320 Grit

• Between Coats: Lightly scuffs surfaces to improve adhesion between finish layers.
• Final Sanding: Prepares wood for ultra-clear finishes or lacquer.
• Automotive Paint Work: Smooths clear coats before polishing.
• Trim and Detail Sanding: Ideal for fine cabinetry and custom work.

Tools & Setup

• 320 Grit Sanding Disc from the 50-Pack
• Random orbital sander with hook & loop pad
• Dust collection system or shop vacuum
• Protective eyewear and dust mask

Step-by-Step: Using 320 Grit

1. Prep with 220 Grit: Start with a fine, even base before moving to ultra-fine sanding.
2. Attach the Disc: Align the 8 holes to optimize dust removal.
3. Sand Gently: Use very light pressure to avoid polishing the surface too much.
4. Work in Overlapping Passes: Maintain consistency across the entire area.
5. Clean Thoroughly: Remove all dust before applying the final finish.

Pro Tips

• Replace discs at the first sign of reduced cutting efficiency.
• Use in bright lighting to spot micro-scratches before coating.
• Always sand with the grain for the cleanest finish on wood.

Common Mistakes

• Skipping 320 Grit: Can leave tiny imperfections visible after finishing.
• Using for Heavy Removal: Too fine for stripping paint or shaping material.
• Over-Polishing: May reduce adhesion if the surface becomes too slick.

FAQs

• Can 320 grit be used wet? Yes, if the disc is rated for wet/dry sanding.
• Is it good for metal? Excellent for final smoothing before polishing.
• Can I use it between paint coats? Absolutely—removes dust nibs and improves smoothness.

Watch 320 Grit in Action

For a flawless final surface, 320 grit sanding discs offer the precision you need. Get the 5-Inch 8-Hole Sanding Discs (50-Pack) and make your next project shine with professional-grade smoothness.