
A nail file is an essential tool for nail care. It is used to shape, buff, and shine nails. While nail files are available at affordable prices, some high-quality files can be expensive. Classical guitarists and crafty individuals often make their own nail files as a cheaper alternative. You can make your own nail file at home using sandpaper, tongue depressors, and a glue stick. The grit strength of the sandpaper determines how fine it is, and a generic nail file has a grit of 100 to 200. Cut the sandpaper into your desired shape and size, and stick it to the tongue depressor using glue. You can also add your own design to the sandpaper before assembling the nail file.
| Characteristics | Values |
|---|---|
| Materials | Sandpaper, tongue depressors, glue stick |
| Sandpaper Grit Strength | 100-200 grit for generic nail files, 80-100 grit for acrylic nails, 180-200 grit for natural nails, 200+ grit for a smoother surface |
| Design | Cut sandpaper into desired shape and size, use construction paper for stabilization if needed |
| Assembly | Spread glue on one side of the tongue depressor, press and hold firmly onto the back of the sandpaper until dry |
| Usage | File nails when dry, use single strokes along the grain of the nail, avoid sawing motion, do not over-buff |
| Disposal | Throw away worn-out nail files, disinfect after each use to eliminate germs |
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What You'll Learn

Using sandpaper
Sandpaper can be used to create a homemade nail file. Nail files are used to shape and smooth fingernails and are typically made with sandpaper that has a grit between 100 and 200. The grit level of the sandpaper determines how fine it is—the lower the number, the coarser the sandpaper, and the higher the number, the finer the sandpaper. For a nail file, it is recommended to use sandpaper with a grit of 100 or higher to achieve a smoother surface.
To make a nail file using sandpaper, start by cutting the sandpaper into your desired shape and size. Cut out the same shape from a piece of construction paper, which can be any colour of your choosing. If you want to add a design to your nail file, it is recommended to do so on the sandpaper before sticking the layers together.
Next, assemble the layers of your nail file. Place one piece of sandpaper down, with the rough side facing up. Add your construction paper layer(s) on top of the sandpaper. Then, place another piece of sandpaper on top, ensuring that the rough sides of both sandpaper pieces are visible. Make sure that all the layers are aligned properly.
Once you are happy with the alignment, use a glue stick to adhere the layers together. You can also use wood glue if you are attaching the sandpaper to a thin piece of wood. Spread the glue evenly on the back of the sandpaper and press it onto the tongue depressor or wood base. Place a weight on top and allow the glue to dry completely.
After the glue has dried, you can sand the edges to ensure that the paper is flush with the base. Now your homemade nail file is ready to use! Remember to disinfect your nail file after each use to prevent the transmission of germs and diseases.
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Choosing the right grit strength
If you're shaping natural nails, a grit of 180-240 is recommended. A 180 grit file will be sufficient for most people, but if your nails are very soft or damaged, you may want to opt for a 240 grit file, as this will be gentler on your nails. A 180/240 grit file can also be used to remove the shine from natural nails during nail prep.
For removing gel nails, a medium grit of 100/180 is typically used. The 100 grit side is used first to break through the top coat of gel, and then the 180 grit side is used for finer filing and smoothing. If you're removing soak-off gel polish, a 180 grit file is usually sufficient.
Acrylic nails are thicker and more durable than natural nails, so they require a coarser file for shaping and smoothing. A grit of 80-100 is ideal for heavy-duty filing and shaping acrylic nails. A 100/180 grit file can also be used for shaping and debulking acrylic nails, with the 100 grit side reducing length and the 180 grit side shaping the nail.
Buffers also have grit numbers and are used to bring shine to acrylic or natural nails. A 100/180 buffer is used first, followed by a 220/280 buffer to eliminate ridges and create a smooth surface. Finally, a 600/4000 buffer is used to bring out the shine.
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Cutting out the shape
When cutting out the shape of your homemade nail file, you can get creative and cut out any shape you want. A flat oval is a good option, as demonstrated by an Instructables user, who cut out a 23 cm long and 9.5 cm wide flat oval from sandpaper. You can use this first cutout as a reference to cut out the next few shapes. Cut out a sheet of construction paper in the same way you cut out your first oval. You can choose any colour of construction paper you prefer.
It is recommended to cut out more ovals of construction paper for stabilisation, so there is less bendiness. You can cut out as many shapes as you like, but no more than two cutouts of sandpaper are needed. Check that all your layers of sandpaper and construction paper line up. If they don't, make little adjustments and check again. It is easier to adjust now than later when the layers are stuck together.
If you want to put a design on your nail file, it's best to do this before sticking all the layers together. Put your design on the side of the sandpaper first, so you don't ruin any sandpaper in the process. Stick the layers together in this order: sandpaper, construction paper(s), and then the other sandpaper. Make sure the rough sides of the sandpaper pieces are visible.
For people using tongue depressors, cut small strips of different grit levels and place them on the same tongue depressor. You will only need to use one nail file to achieve perfect nails.
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Gluing the sandpaper
To make a homemade nail file, you will need sandpaper, construction paper, and glue. You can also use a tongue depressor for a handle.
Sandpapers have a "'grit strength' that determines how fine the sandpaper is. The lowest grit of sandpaper is around 20, and the highest is ultra-fine sandpaper at around 1000 grit. For a nail file, you should use sandpaper of 100 grit or more for a smoother surface.
First, cut out the shape you want your nail file to be from the sandpaper. You can make it any shape you like, but a flat oval is a good option. Cut out the same shape from the construction paper, which can be whatever colour you prefer. You can also cut out multiple layers of construction paper for stabilisation if you want your nail file to be less bendy.
Now it's time to glue the sandpaper. Spread the glue along one side of a tongue depressor. If you're not using a tongue depressor, you can simply glue the sandpaper and construction paper together. Press the tongue depressor firmly onto the back of the sandpaper. Make sure the rough side of the sandpaper is facing out. Keep pressure on the tongue depressor and sandpaper while waiting for the glue to dry.
If you want to add a design to your nail file, it's recommended to do so before gluing all the layers together. Only add your design to one side, so it doesn't get ruined by dust produced from your nails on the sandpaper.
Once the glue is dry, your homemade nail file is ready to use! Remember to disinfect your nail file after each use to eliminate germs.
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Adding a design
If you want to add a design to your homemade nail file, cut out your chosen shape from sandpaper first. Then, before sticking all the layers together, add your design to one side of the sandpaper. This will ensure that you don't ruin any sandpaper in the process.
You can choose any design you like, but it's important to only add it to one side of the sandpaper so that it doesn't get ruined by dust produced from filing your nails. You can cut out a shape that you like and use it as a template to create the same shape from your sandpaper. For example, you could cut out a 23 cm long and 9.5 cm wide flat oval, as suggested by one source.
Once you have your sandpaper cut out in the desired shape, it's time to add your design. You can use a variety of materials to create your design, such as construction paper, paint, or markers. Get creative and choose a design that reflects your personality or interests.
After you've added your design, it's time to assemble your nail file. Follow the steps outlined in the previous paragraphs to glue your sandpaper to a tongue depressor, creating a sturdy base for your file. Make sure to let the glue dry completely before using your new, custom-designed nail file!
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