120 Grit Sanding Discs: Reliable Surface Prep for Smooth, Even Results

120 grit sanding discs are the go-to choice when you need to refine a surface after coarse sanding but before moving to finer grits. Found in the 5-Inch 8-Hole Sanding Discs, Hook & Loop, Assorted Grit (50-Pack), these medium-grit discs balance cutting speed with surface smoothness.

Why 120 Grit is an Important Step

It removes deep scratches left by 80 grit while leaving a surface that’s smooth enough to move on to 180 grit. It’s ideal for furniture work, cabinetry, and general woodworking or metal sanding tasks.

Best Uses for 120 Grit

• Furniture Refinishing: Smooths wood after heavy stock removal.
• Cabinet Prep: Creates a uniform surface for primer or paint.
• Metal Smoothing: Removes oxidation and prepares metal for primer.
• Patch and Filler Leveling: Evens repaired areas for a seamless blend.

Tools & Setup

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

Step-by-Step: Using 120 Grit

1. Prep with 80 Grit: Start with coarse sanding to remove major imperfections.
2. Attach the Disc: Align the 8-hole pattern for maximum dust collection.
3. Sand Evenly: Use overlapping passes without pressing too hard.
4. Check the Surface: Ensure all coarse scratches are removed before moving on.
5. Move to 180 Grit: Transition smoothly for finer finish prep.

Pro Tips

• Vacuum between grit changes to prevent deep scratches.
• Use consistent motion to avoid uneven sanding.
• Replace discs when cutting slows to maintain efficiency.

Common Mistakes

• Skipping 120 Grit: Can leave coarse scratches that show under finishes.
• Using for Heavy Removal: Not coarse enough for stripping paint or leveling floors.
• Over-Sanding: May polish the surface too much for good finish adhesion.

FAQs

• Can 120 grit be a final sanding grit? Suitable for paint prep, but finer grits are better for staining or clear coating.
• Is it good for plastic? Yes, but use light pressure to avoid heat damage.
• Can it be used wet? Only with discs rated for wet/dry sanding.

Watch 120 Grit in Action

When you need dependable, consistent surface preparation, 120 grit sanding discs are the perfect middle step. Stock up on the 5-Inch 8-Hole Sanding Discs (50-Pack) and get professional results every time.