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DIY Knife Sharpening Kit


Is your knife so dull you can’t even cut butter? These DIY knife sharpening kit will give you a quick and easy way to sharpen all of your knives with things you probably have in your garage!


DIY Knife Sharpening Kit: Inexpensive & Easy to Make at Home

You always want your knives to be as sharp as the first time you bought them, and we all know this requires having a good knife sharpening kit to make it happen. However,  a good set of sharpening stones can be very costly. And when the stones are used repeatedly, it results in an effectual “bowl” shape. To reverse this requires yet another stone, called a flattening stone. This means additional dollars out of your pocket… To help keep those dollars wherethey belong, we’ve put together a great, cost effective DIY solution  to accomplish all of these things!


How to Make a Homemade Knife Sharpener

This DIY knife sharpening kit will be capable of making your knife sharp enough to shave with, utilizes easily obtainable materials, and never “goes bad” or develops “bowl”-ing problems. This do-it-yourself knife sharpening kit can be made simply by attaching sandpaper onto a bathroom tile. It easy to do and it works just like a sharpening stone. All you have to do is replace the sandpaper once it’s old.

Materials and Tools Needed

  • Container of acetone (fingernail polish remover)
  • Adhesive spray
  • 5 variety packs of high grit sandpaper (800-2,000 grit)
  • Scissors
  • Cotton cloths
  • Rubber bumpers (optional)
  • 5 smooth bathroom tiles
  • Wax paper
Supplies You Need To Make A DIY Knife Sharpening Kit

With sandpaper, the higher the grit number, the finer the sanding. You’ll want to use 800, 1,000 or 2,000 grit sand paper (at the very least). 200-400 grit sand paper is only good for sharpening a knife that is really dull and dinged up. If you want to sharpen you knife to effectively shave your face, 2,000 grit sand paper is the way to go.

The Process

First, make sure you are in a relatively clean, well-ventilated area. You do not want to be in a non-ventilated area while using the acetone.

Step 1: Clean the Tile

Put a bit of acetone on the cloth rag to clean the bathroom tiles. You need to remove of the fuzzy material left on the tiles. Wait for a few minutes for the acetone to flash off of the tiles.

Pour some acetone on a cloth or rag.
Wipe the acetone on the tiles to clean them and remove any residue.

Step 2: Attach Sandpaper

Next, you want to attach the sandpaper to the bathroom tile. In a well-ventilated area, spray the bathroom tile and the back of the sandpaper sheet with the spray adhesive. Let them sit for as long as the adhesive suggests, then attach them together properly.

Use a strong spray adhesive to coat the tops of your tiles.
Align the sandpaper over the tile and then press firmly to secure.
Trim any excess sandpaper with either scissors or a utility knife.

Step 3: Compress and Cure

Lay a sheet of wax paper on top of the sharpening tile. Then you want to place a large flat weight on top of the to compress the sandpaper sheet onto the tile, and let it sit and cure.

Cut pieces of wax paper that will cover each tile.
The wax paper will go over the sandpaper.
Place books or another heavy object on top of the wax paper and then allow the adhesive to set for at least an hour.

Step 4: Repeat for Each Grit You Want

Repeat this same process for the other four bathroom tiles using the other grit varieties of sandpaper. You will want to label each tile with what grit sandpaper it has on it. This way you will know which tile you want to use depending on the condition of the knife you are sharpening. You will need to wait for at least an hour or two before start using the sharpening tiles in order for the adhesive spray to cure.

Optional Addition:

You can use little rubber bumpers on the bottom of the bathroom tiles. It helps stack the tiles without worrying about damaging the sandpaper sheets. In addition, it is easier to sharpen the knives without the sharpening tile moving. When changing the sandpaper from the bathrooms tiles, once it gets old or damaged, just use peel the sand paper off and remove the adhesive using the cotton cloth and acetone.

diy-knife-sharpener how-to-sharpen-knives-at-home how-to-sharpen-stuff sharpen-knife sharpen-knives sharpen-knife-at-home   Important:

Recommended sharpening method:

If you don’t know how to sharpen a knife using a sharpening stone, you will want to watch some videos to learn before trying to sharpen your knives. When you are sharpening using this kit, you only want to PULL the knife back as you sharpen it; Do not PUSH the knife forward to sharpen it. This will prevent damage to the sand paper, and extend the life of the sharpener.

Always use water as a lubricant. Since the sand paper is of a wet or dry type, just use water — that’s what it was made for. The 800, 1,000 and 2,000 will be your most used grits/tiles. Any grit less than that should only be used for knives that are extremely dull.

Now go enjoy sharpening all of your knifes! And remember — be careful with sharp objects! We don’t want you cutting yourself!


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Ready To Make Your Own DIY Knife Sharpening Kit?

I finally found supplies locally, but they were not available at any of my local hardware stores. I actually had to go to two automotive stores before I found this grade of sandpaper. I checked Amazon, just to be able to provide product links, and was surprised to find they offer this sandpaper at about half the price of what I paid.

Here are my favorite picks for supplies:

Sandpaper Pack: Assorted Grade

3M(TM) Wetordry(TM) Sandpaper, 03006, 3-2/3 in x 9 in, Assorted, 5 sheets per pack

Sandpaper Pack: Assorted Grade

3M 03024 Imperial Wetordry 3-2/3″ x 9″ Sandpaper with Assorted Grit Sizes, (Pack of 5)

Spray Adhesive : Super 77 (my favorite)

3M 77 Super Multipurpose Adhesive Aerosol, Clear 16.75 Oz. Aerosol Can


  1. This is cool. Excellent way to get a knife sharpening kit on a budget – thanks!

    FWIW, I have also used a belt sander to sharpen axes and gotten excellent results.


    • to hone a kitchen or other knife turn an inexpensive stoneware mug upside down on a paper towel, sharpen the knife on the exposed rim on the mug bottom. The black residue on the exposed ceramic is the steel removed from the edge of the knife and will was off easily. The mug isn’t harmed at all.

      Gerry N.

  2. Glue or epoxy the tile to a piece of flat board about 1/2 to 1″ thick and the same size as tile. This will raise the tile up from your work area some, making it a little easier to sharpen the knife. It will also help prevent the tile from cracking or breaking should you lay something on it. Raising the tile up with the little “bumpers” will help to keep it from slipping, but will give the tile more of a chance to get broken. Make sure your selection of tile is absolutely flat where you want to attach the sand paper or wet/dry paper. Glossy tile is best.

  3. I have in a pinch used emery cloth pinched in a table vice just pull hard and sharpen away like I said in a pinch not the preferred method but will hone one up


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