Sanding Progression with 180, 400, and 2000 Grit Sandpaper

For projects that need both refinement and ultra-smooth polishing, the combination of 180, 400, and 2000 grit sandpaper is an excellent sequence. It balances initial smoothing, mid-level preparation, and final polishing for professional-quality results.

Why This Sequence Works

180 grit smooths surfaces and removes light imperfections. 400 grit prepares the material for coatings or further fine sanding. Finally, 2000 grit delivers a polished, high-gloss surface ready for buffing or sealing.

Tools You’ll Need

• Sanding block or orbital sander for 180 grit
• Sanding sponge or pad for 400 grit
• Foam pad and water spray bottle for 2000 grit wet sanding
• Vacuum and tack cloth

Step-by-Step Process

1. Initial prep. Begin with 180 grit (25-pack) to smooth rough areas and prepare the surface.
2. Refinement. Switch to 400 grit (50-pack) to erase scratches and leave an even surface.
3. Final polish. Wet sand with 2000 grit (100-pack) for a silky, polished finish.
4. Clean between stages. Always vacuum and tack cloth after each grit to avoid residue buildup.

Special Cases

In woodworking, this sequence works well for high-end furniture, especially when preparing for oil or clear finishes. In automotive, 180 grit is great for filler shaping, 400 grit preps primer, and 2000 grit polishes clear coats. Resin and plastic projects also benefit from this fine progression.

Pro Tips

• Do not apply too much pressure at finer grits—let the paper cut gently.
• Always wet sand at 2000 grit to avoid clogging and maximize clarity.
• Sand with the grain on wood, and in circular motions for clear coats.

Aftercare

• Apply protective coatings immediately after sanding to lock in smoothness.
• Buff 2000 grit finishes with polishing compounds for a mirror-like shine.
• Store sandpapers flat and dry to keep them effective.

FAQs

• Is 180 grit coarse? It’s medium grit—ideal for prep before finer sanding.
• Why use 400 grit? It’s versatile for refining surfaces and between-coat sanding.
• What’s the purpose of 2000 grit? To achieve high-gloss polishing, especially in automotive and resin projects.

Watch & Learn

By following the 180, 400, and 2000 grit sanding sequence, you’ll achieve surfaces that are smooth, polished, and ready for long-lasting finishes.