Manicure begins not with varnish and not even with the removal of the cuticle, but with giving the nail plate the correct shape. This is the stage that dictates how neat the hand will look as a whole. Often beginners, buying professional tools, are faced with mysterious numbers on the back of the file, such as 100, 180 or 240 grits. These values indicate abrasiveness, that is, the degree of graininess of the working surface.
Understanding that, 100 180 for what purpose It is used, is fundamental to creating a quality manicure. Incorrect choice of tool can lead to stratification of the nail, the appearance of microcracks or, conversely, to too aggressive removal of length. In the nail service industry, a gradation is adopted, where a smaller number means a rougher abrasive, and a larger one means a softer one.
In this article, we will examine in detail the physics of sawn-off process, explain the difference between different labeled parties, and give clear instructions for safe use. You will learn why natural nails have strict restrictions on the rigidity of the tool and how not to turn a healthy plate into "rags" with the wrong movements.
What do the numbers on the file mean: decoding gritty
The numbers on the back of the nail instrument are called gritty (grit) It is an international standard that determines the size of abrasive particles sprayed on the surface. The smaller the number, the larger the grain and, accordingly, the more aggressive the effect on the material. Marked saw 100/180 It is a two-way process where each party performs its unique function.
The side marked with 100 grit is classified as rigid abrasives. It is designed to work with artificial materials such as acrylic or hard gel, as well as to quickly remove length. Using this side on thin natural nails can be dangerous, as large grains act like sandpaper, leaving deep furrows.
The second party, which has a score of 180 grit, can work with greater caution. This is a medium abrasive that is often used by craftsmen to prepare the nail bed before applying the coating. However, even 180 grits require accuracy: for grinding a cut of natural nails, professionals often recommend switching to even softer options, starting from 240 grits.
- 🔹 100 grits is a super-hard side for removing artificial material and rough shape correction.
- 🔹 180 grit - medium-hard side for sawing of the free edge and surface preparation.
- 🔹 240 grits and above are soft file, safe for finishing natural nails.
It is important to understand that abrasiveness is not just marketing, but a physical characteristic that affects nail health. If you use a tool that is too rough, you don’t just saw length, you break the keratin bonds inside the plate. That's why the question is, 100 180 for what purpose It is best suited to require a detailed review of the structure of your nails.
⚠️ Attention: Never use the 100 grit side on thinned, layered or damaged natural nails. This will lead to instant deterioration of the plate and the appearance of deep cracks at the free edge.
Differences between 100, 180 and 240 grits
To finally understand the hierarchy of tools, it is necessary to compare their impact on the material. The saw of 100 grit works quickly and rough, removing a significant layer of material in one movement. This is effective for artificial nails, but harmful for living tissues. At the same time, 180 grits provide a smoother ride, allowing you to control the shape, but still leaving a noticeable roughness on the cut.
When we talk about 240 grits, we are talking about a much more delicate tool. These types of files are often called “soft ones”. They do not tear keratin scales, but smooth them carefully. For natural nails that are not coated with gel polish or acrylic, using abrasive softer than 180 grit is the gold standard of safety.
The difference in impact becomes obvious when increasing: large grains of 100 grit leave behind a “teared” edge, which requires mandatory grinding with a softer buff. 180 grit leaves less pronounced risks, but still noticeable on close inspection. Only by moving to 240 grits and above, you can achieve a smooth, sealed edge that is less prone to stratification.
| Parameter | 100 Grit | 180 Grit. | 240 Grit |
|---|---|---|---|
| Rigidity | Very high. | Medium | Low (soft) |
| Appointment | Removal of artificial material | Pawl uniforms, preparation | Finishing of natural nails |
| Risk to the nail | High-pitched | Medium. | Minimum |
| Speed of operation | Maximum | Moderate. | Slow. |
Techniques for safe sawn nails
Even the right tool will not save you from damage if the technology of work is broken. The basic rule that everyone should learn is that the movement of the file should be made in only one direction. Return-and-return movements (“there-and-there”) swollen the edge of the nail, driving the scales under each other, which ultimately leads to stratification.
When working with a 100/180 file, it is important to keep the tool at the right angle. To form a free edge, the file must be perpendicular to the nail. If you close the file at an angle, you will create thinning in the stress zone (where the nail begins to bend), which is a direct road to breakage. Movements should be confident, but light, without strong pressure.
☑️ Checklist for safe sawn-off
Particular attention should be paid to the side rollers. Saw 180 grit perfectly copes with the correction of the shape at the sides, but it is important not to touch the skin. Careless movement of a rigid abrasive can leave microtraumas that will become the entrance gate for infections. Always control the angle of inclination and pressure.
⚠️ Attention: It is strictly forbidden to saw wet nails immediately after a bath or shower. In the wet-state, the nail plate softens and becomes elastic; the file does not cut, but tears the fibers, which is guaranteed to lead to stratification in a few days.
100/180 for natural and artificial nails
The main difference in the processing approach is the material you work with. Natural nails It is made up of keratin, which has a layered structure. They're flexible, but they're fragile. The 100-Grit side is almost never used. The 180 grit side is only applicable for quick length removal in owners of very strong nails, but the finish still requires softer grinding.
The situation is changing dramatically when it comes to fabrication. Acrylic, polygel and solid gels for building have a dense, monolithic structure. The saw 100 grit is the main working tool here. It allows you to quickly remove the volume, level the surface and form the architecture of the nail, which soft file simply can not cope with – they will slide or clog with dust.
Many masters use a combined approach: with a rough side (100 grits), they form the main architecture and remove the step from the cuticle (if the material allows it), and with a side of 180 grits smooth the transitions and polish the surface before applying the top. This speeds up the process and improves the quality of the coating.
Can I remove a gel varnish with a 100/180 file?
Yes, the side of 100 grit can be used to rough remove the main layer of gel polish or top, but you need to do this extremely carefully so as not to cut through a natural nail. It is better to use a miller or special hard buffs (150-180 grit), leaving 100 grits only for very dense materials.
How to extend the life of the saw: care and disinfection
Many consider the file to be an expendable material that is thrown away after one client or blunting. However, with proper care, a high-quality metal or ceramic base, and sometimes a good-quality abrasive, can last a long time. The main enemy of the saw is nail dust and skin fat, which clog the space between abrasive grains.
Use a special brush to clean. The movements of the brush should be directed away from itself, sweeping dust from the pores. If the file is metal or has a washable base, it can be washed under running water with soap, but only after careful mechanical brushing. It is important to dry the tool completely before the next use to avoid corrosion of the base or the development of bacteria.
Disinfection is a mandatory stage for professionals. Pillows with an abrasive layer (paper, plastic) are often referred to as disposable or conditionally disposable. They can be soaked in disinfectant solutions (e.g., based on chloramine or quaternary ammonium salts), but this can destroy the adhesive layer that holds the abrasive. Therefore, salons often use either disposable file or autoclavable metal.
- 🧹 Clean the file regularly with a hard brush after each use.
- 💧 Metal file can be washed with water, paper - only wiped with alcohol or disinfectant.
- 🛡️ Store the tool in a closed case or craft package to protect against dust and moisture.
⚠️ Attention: If the abrasive layer of the file began to wear off, peel off or lose its properties (stopped sawing, only ironing), the tool must be replaced immediately. Working with a blunted file requires more pressure, which increases the risk of nail injury.
Frequent errors when using a 100/180 file
One of the most common mistakes is to ignore labeling. Beginners often pick up the file “what they found” or the one that seems more comfortable in color, without paying attention to the numbers. Using the 100 grit side to saw off natural nails before coating is a guaranteed way to get lacquer detachment after a week due to the damaged edge structure.
Another mistake is improper storage. Abandoned in the purse among the keys and trifles, the file is instantly clogged with a pile of fabric and metal shavings. The next time you use this garbage, it will scratch the nail deeper than the abrasive itself. Always use a protective cap or cover.
Tip: If you don’t have a special brush to clean your file, use an old toothbrush. It perfectly cleans the dust from the pores of abrasive and allows you to extend the life of the tool.
It is also a mistake to try to use the same file for different materials without cleaning. After drinking acrylic, you saturated the pores with solid acrylic crumb. If you then start to saw a natural nail, this crumb will act as an additional cutting substance, causing microtraumas. For different materials, it is better to have separate tools or thoroughly disinfect them between treatments.
The sawing 100/180 is a universal, but requires a competent approach tool. The 100 grit side is designed exclusively for artificial materials, and 180 grit requires caution when working with natural nails.
FAQ: Frequently Asked Questions
Can I use 100/180 nail polish?
No, this file is too rough to polish. Polishing (grinding) is carried out with special soft buffs with grit from 240 to 1200. Using 100/180 will leave a deep scratch on the nail.
How often should I change the file 100/180?
For home use, one high-quality file can last for 6-12 months, if it does not lose its abrasive properties. In salon conditions, paper file is often changed after each client or group of customers in accordance with SanPiN.
What's the difference between a saw and a buff?
The saw (100-180 grit) is designed to change the shape and length of the nail (removal of material). Baf (240+ grit) is a soft sponge or bar for grinding the surface, removing irregularities and preparing for the coating without taking off length.
Why did the nail turn white after sip with 180 grit?
Whitening of the edge of the nail (onycholysis in miniature or just stratification) indicates that the abrasive was too rough for your nail structure or you sawed a wet nail. Switch to a softer file (240 grit) and saw only dry nails.