Sanding Automotive Filler with 320 Grit Sandpaper Sheets

Body filler is essential for repairing dents and imperfections on cars, but achieving a smooth, paint-ready surface requires proper sanding. eQualle 320 grit sandpaper sheets (9x11 in, Wet or Dry) are ideal for refining automotive filler before primer and paint.

Why 320 Grit for Filler?

320 grit is a very fine abrasive that removes scratches left by coarser grits (like 80 or 180) and levels filler surfaces. It creates a smooth, uniform finish that primer can bond to without leaving sanding marks visible under paint.

Tools You’ll Need

• eQualle 320 Grit Sandpaper sheets (9x11 in, Wet or Dry)
• Sanding block or orbital sander
• Body filler spreader
• Dust mask and safety glasses
• Tack cloth or microfiber rags

Step-by-Step: Sanding Automotive Filler

1. Shape with coarse grit. Start with 80 grit to rough shape filler, then smooth with 180 grit.
2. Refine with 320 grit. Use 320 grit (50-pack) to level the surface and prepare for primer.
3. Check smoothness. Run your hand over the area to ensure it feels even and flawless.
4. Clean surface. Vacuum and wipe with a tack cloth to remove all dust before priming.
5. Prime and finish. Apply primer, then continue sanding with finer grits (400–600) before painting.

Special Cases

For large filler areas, sand in crosshatch patterns to maintain evenness. For small dents, fold sandpaper into small strips to control sanding precisely.

Pro Tips

• Always sand filler after it has fully cured—soft filler clogs paper quickly.
• Sand with a block for flatness; avoid finger sanding which can cause waves.
• Switch to wet sanding for finer finishes before primer.
• Inspect under a work light to catch imperfections before painting.

Aftercare

• Apply primer immediately after sanding to protect exposed filler.
• Store sandpaper flat and dry for consistent performance.
• Dispose of clogged sheets—fresh abrasives cut more effectively.

FAQs

• Can I use 220 grit instead of 320? 220 is fine for intermediate sanding, but 320 provides the best surface for primer.
• Do I need to sand after primer? Yes—use 400–600 grit for paint prep.
• Will 320 grit remove too much filler? No—if used lightly, it simply refines and smooths the surface.

Watch & Learn

For smooth, professional auto body repairs, trust eQualle 320 grit sandpaper sheets. Perfect for refining filler before primer and paint. Shop 320 grit sandpaper sheets today.