Ultimate Guide to Nail File Grits: How to Choose the Right number for Nail Technician

June 09, 2025
Posted by Anh Nguyen

What is Grit, and What Does It Mean?

Grit refers to the coarseness or fineness of a nail file, determined by the number of abrasive particles per square inch. The lower the number, the coarser the file; the higher the number, the smoother and gentler it is. For example, an 80 grit file is very coarse and suitable for removing thick acrylic, while a 240 grit file is ultra-fine and ideal for shaping natural nails. Understanding grit is key to selecting the right nail file for your specific needs.

What is the Difference Between Files and Buffers?

Files are designed to shape, shorten, and remove product using abrasive surfaces, while buffers are typically softer and used to smooth the nail surface or create shine. Files usually have a harder core and are available in a variety of shapes and grits. Buffers, on the other hand, are thicker, sponge-like, and often used in the final steps of nail preparation or finishing.

What Significance Does the Shape of the File Have?

The shape of a nail file affects usability and filing precision:

Straight: Ideal for filing the free edge and sidewalls.
Banana: Curved for working around the cuticle area without harming the skin.
Oval: Wider surface for covering more area, great for smoothing large surfaces.
Halfmoon: A hybrid of straight and curved, suitable for versatile filing.

Choosing the right shape ensures comfort, efficiency, and better results during the manicure process.

Which Type and Grit to Choose?

Here’s a breakdown of grit types and their ideal use:

60 Grit: Extremely coarse; for hard product removal (rarely used).
80 Grit: Very coarse; best for removing acrylics, gels, and dip powder.
100 Grit: Coarse; for shaping and debulking acrylic nails.
150 Grit: Medium coarse; for refining gel enhancements.
180 Grit: Fine; best for natural nails and soft enhancements.
240 Grit: Very fine; used to smooth and shape natural nails.

At Dynamic Nail Supply, our most popular files include 80/80, 100/100, and 100/180 grit files for their versatility and salon-quality performance.

Does the Quality of the File Matter?

Absolutely. Low-quality files wear out quickly, produce uneven results, and can damage the nail. Dynamic Nail Supply hand files are made with premium Japanese-grade emery, strong hardboard cores, and even grit distribution. This ensures consistent performance, durability, and client safety, making them a smart investment for professionals and DIY users alike.

How to Clean and Sanitize Your Nail Files

To ensure hygiene and extend file life:

Brush off dust with a stiff nail brush.
Wash in warm soapy water and rinse.
Air dry completely or towel dry.
Spray with disinfectant (e.g., Chlori Spray).
Store in a clean, closed container.

Avoid reusing unclean files between clients. Replace any file that comes into contact with blood immediately.

Do Nail Files Need Replacing?

Yes. Even the best files degrade over time. Signs it's time to replace your file:

Grit has worn down.
File feels smooth and ineffective.
You need to apply more pressure when filing.
File has come in contact with contaminants.

Dynamic files are reusable and long-lasting when cared for properly, but should still be replaced as needed for optimal performance.

Dynamic Nail Supply: The Best Combination of the Highest Quality Levels in One File

Dynamic Nail Supply offers nail files crafted with:

Top-tier Japanese industrial grit standards
High-quality adhesive and emery paper
Durable hardboard core for lasting shape and control
Double-sided grit for versatility

Our files are water-resistant, washable, and reusable, making them a favorite among nail professionals nationwide.

What Grit File Should I Use to Remove Gel?

100 Grit: Start to break down the top layer.
180 Grit: Use to smooth and finish before soaking off with acetone.

Using Dynamic’s 100/180 grit file gives you both options in one tool.

What is the Best Grit File for Acrylic Nails?

80 Grit: For fast product removal.
100 Grit: For shaping and shortening.
180 Grit: For refining the surface.

Our 80/80 grit pink files are a go-to for acrylic nail techs who demand speed and precision.

What Grit File to Use on Natural Nails?

180 Grit: To shape natural nails gently.
240 Grit: To smooth edges and prep the surface without damage.

Dynamic offers 100/180 and 180/240 options ideal for natural nail care.

Why Choose Dynamic Nail Supply Hand Files?

Professional-grade quality
Consistent grit texture for smooth results
Durable, reusable & water-resistant
Versatile for acrylics, gels, dips, and natural nails
Trusted by salons and nail techs across the U.S.

Whether you’re a beginner or a pro, Dynamic Nail Supply hand files deliver the quality, precision, and durability you need for flawless nails every time.