Step-by-Step Sanding with 180, 240, and 1200 Grit Sandpaper

When you need a sanding routine that balances surface prep, smoothing, and fine polishing, the grit sequence of 180, 240, and 1200 sandpaper is a reliable choice. This combination works well for woodworking, automotive refinishing, and resin projects that demand smooth results.

Why This Sequence Works

180 grit prepares the surface by removing light scratches and leveling imperfections. 240 grit builds on that foundation, creating a uniform surface ready for coatings. Finally, 1200 grit polishes surfaces to a silky smooth finish ideal for high-end applications.

Tools You’ll Need

• Sanding block or orbital sander for 180 grit prep
• Sanding sponge or pad for 240 grit refinement
• Foam pad with water spray bottle for 1200 grit wet sanding
• Vacuum and tack cloth

Step-by-Step Process

1. Surface prep. Start with 180 grit (25-pack) to smooth rough spots and prepare the material.
2. Refinement. Switch to 240 grit (50-pack) to erase sanding marks and create a finish-ready surface.
3. Final polish. Wet sand with 1200 grit (100-pack) for silky smooth, polished results.
4. Clean carefully. Vacuum and tack cloth after each grit stage to ensure dust-free surfaces.

Special Cases

In woodworking, 180 grit is a common starting point, 240 grit preps surfaces for staining, and 1200 grit creates premium smoothness. In auto refinishing, 180 grit shapes filler, 240 smooths primer, and 1200 polishes clear coats. Resin projects also shine with 1200 grit polishing.

Pro Tips

• Never skip from 180 to 1200—240 grit ensures scratches are fully removed.
• Always wet sand with 1200 grit for best clarity and reduced clogging.
• Use light, even pressure with finer grits for consistent polishing.

Aftercare

• Apply protective finishes right after sanding to preserve the smoothness.
• Buff 1200 grit results with compounds for mirror-like shine.
• Keep sandpapers stored flat and dry for long-lasting use.

FAQs

• Is 180 grit good for finishing? It’s for prep only—always refine with finer grits.
• Why use 240 grit? It provides finish-ready smoothness before stains or primers.
• What’s 1200 grit best for? It delivers silky smooth polishing, perfect for resin, auto clear coats, and fine wood finishes.

Watch & Learn

By sanding with 180, 240, and 1200 grit sandpaper in sequence, you’ll achieve consistent, professional results from prep to polish.