120 Grit Sanding Discs: Essential for Smooth, Even Surface Preparation

120 grit sanding discs are the ideal choice for refining surfaces after coarse sanding, bridging the gap between heavy removal and fine finish work. Part of the 5-Inch 8-Hole Sanding Discs, Hook & Loop, Assorted Grit (50-Pack), these discs deliver consistent results for wood, metal, and filler applications.

Why 120 Grit is a Key Stage

This grit removes deep scratches left by 80 grit while leaving the surface smooth enough for finer sanding. Skipping 120 grit can lead to visible marks and uneven finishes, especially on large or detailed projects.

Best Uses for 120 Grit

• Wood Refinement: Smooths furniture, cabinetry, and trim after coarse sanding.
• Paint Prep: Prepares bare wood or sanded surfaces for primer or paint.
• Metal Work: Levels mild imperfections before priming.
• Filler Leveling: Smooths wood filler, body filler, or putty without tearing.

Tools & Setup

• 120 Grit Sanding Disc from the 50-Pack
• Random orbital sander
• Vacuum or dust collection system
• Dust mask and protective eyewear

Step-by-Step: Using 120 Grit

1. Prep the Work Surface: Sand with 80 grit first if heavy removal was needed.
2. Attach the Disc: Match the 8 holes to the sander’s pad for dust extraction.
3. Sand with Even Pressure: Keep a steady motion to prevent gouges.
4. Overlap Passes: Slightly overlap strokes for consistent coverage.
5. Check the Finish: When coarse marks are gone, move to 180 grit for finer smoothing.

Pro Tips

• Always sand with the grain on wood to avoid visible scratches.
• Vacuum or wipe down between grit changes to prevent contamination.
• Use fresh discs for large areas to maintain consistent results.

Common Mistakes

• Skipping 120 Grit: Leaves coarse marks that show through finishes.
• Pressing Too Hard: Can leave swirl marks or low spots.
• Using as the Only Grit: Not aggressive enough for heavy removal, not fine enough for final finishing.

FAQs

• Is 120 grit okay for final sanding? For many paint jobs, yes, but for staining or clear coats, move to 180 or 220 grit.
• Can it be used on plastic? Yes, with light pressure to prevent melting.
• Will it work for wet sanding? Only if the discs are rated for wet/dry use.

Watch 120 Grit in Action

For smooth, even results between coarse and fine sanding, make 120 grit part of your process. The 5-Inch 8-Hole Sanding Discs (50-Pack) deliver the quality and consistency you need for professional-looking projects.