A simple device for controlling the correct angle when sharpening a knife by hand

A simple device for controlling the correct angle when sharpening a knife by hand

Manual sharpening requires skill and perseverance, which are often lacking. Without proper experience, when trying to sharpen a blade, it is difficult to maintain the same, and most importantly, the correct angle. As a result, you can spend hours aiming a sharp edge without achieving a result, but only reducing the body of the blade. However, there is a very interesting and effective way that allows you to sharpen using a homemade template - a device.

Will need

The process will require:
  • a piece of plastic decorative corner 20x20;
  • 2 magnets from droplet headphones;
  • Super glue;
  • protractor;
  • marker;
  • assembly knife or scissors.

Making a fixture

The device is a small flag that does not directly contact the sharpening stone, so using a plastic corner is quite enough to make it. Naturally, to make an accurate template you will need markings.

A simple device for controlling the correct angle when sharpening a knife by hand

You will need a piece of corner 40-50 mm long.Stepping back to the left, you need to mark a distance of 10-15 mm on the template, and then form the required sharpening angle from the resulting point, going to the end of the corner. The angle is selected individually depending on what type of knife needs to be sharpened. It is built using a protractor. For a kitchen blade it is 25-30 degrees. The template is cut along the lines using a mounting knife or scissors.

A simple device for controlling the correct angle when sharpening a knife by hand

Next, you need to glue 2 magnets to the inside of the flag. It is convenient to do this on PVC using superglue.

A simple device for controlling the correct angle when sharpening a knife by hand

How to sharpen

The device is fixed with magnets on the knife blade close to the butt.

A simple device for controlling the correct angle when sharpening a knife by hand

The principle of sharpening is very simple. It is necessary to place a whetstone and attach a knife with a flag to it. When hit by side light, the pattern creates a shadow. It is necessary that it be parallel to the clearance line between the flag and the sharpening stone. If the sharpening angle increases, the lines converge, and if it decreases, they diverge.

A simple device for controlling the correct angle when sharpening a knife by hand

Having such a reference point, you can fix the correct angle before each movement and guide the knife correctly. If the blade is long, then, if desired, it is possible to attach several templates to it at once and visually control the angle along its entire length.

Using such a device, you will be able to do every wiring correctly. In this case, sharpening time will be reduced many times over. Working by eye, you can remove the lead edge with a careless movement. An overhead flag will help reduce such risks to a minimum.

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Comments (13)
  1. Sergey K
    #1 Sergey K Visitors 8 February 2019 18:47
    12
    I smiled at the knife for 3 rubles and such a complex method for sharpening it ;)
    People who buy such knives would be happy if they bought the same cheap sharpener for it in the same store, but most likely they would either throw it away when it gets dull or sharpen it with whatever they come across
    1. Eugene
      #2 Eugene Guests 9 February 2019 18:30
      8
      the idea is important. Why immediately scold? Maybe someone will use it.
  2. Guest Alexander
    #3 Guest Alexander Guests 10 February 2019 21:03
    7
    Over many years of working with knives, I have learned to maintain the sharpening angle by hand, but mistakes still happen sometimes. And this thing is simple to the point of genius. Bravo!
    1. I
      #4 I Guests 11 February 2019 11:39
      7
      For a kitchen knife, the eyes are enough as a control. for decent knives such a device is a complete disgrace
  3. Old Nick
    #5 Old Nick Guests 11 February 2019 21:20
    1
    Excellent solution, I sharpen it by eye, I’m used to it, but it’s simple and elegant
  4. Guest Andrey
    #6 Guest Andrey Guests 12 February 2019 13:10
    5
    Very interesting, but how to sharpen along the entire length of the blade? And this miracle will constantly grind against the stone!
    The summary is nonsense.
  5. Guest Dmitry
    #7 Guest Dmitry Guests 13 February 2019 16:45
    0
    And if your hands tremble and your eyes are not right, we sharpen one side and dull the other) The phrase made me smile: - “the sharpening angle of a kitchen knife” or “the angle is selected individually depending on what type of knife needs to be sharpened.” I have always believed that the sharpening angle primarily depends on the grade of steel - what is sharpening for one brand is far from sharpening for another. To sharpen a knife, and not to make a semblance of a sharpening, you need to remove the edge, then sharpen and polish - this sharpening will last a long time. My wife has a “working” knife and after 1.5 months it’s almost like a razor.
  6. Guest
    #8 Guest Guests 15 February 2019 13:28
    1
    Everything ingenious is simple! This idea can be refined to perfection, sell the technology and get rich! There are a lot of examples in the world!!!
  7. Guest Alexander
    #9 Guest Alexander Guests 2 March 2019 14:19
    1
    I just can’t understand why there are such quirks in the family kitchen?
  8. Basil
    #10 Basil Guests 6 March 2019 21:48
    0
    It’s not the knife, it’s the sharpening of it, Where did you go? I wasn’t at work for a week, but the knife got dull. I looked for magnets for a day, then sharpened them. They kept falling off, for so long, I wanted to save on electricity so as not to turn on the emery.
  9. Vasya
    #11 Vasya Guests 6 March 2019 21:55
    1
    Well, yes
  10. Alexander
    #12 Alexander Guests March 16, 2019 06:57
    1
    It feels like the author has never sharpened knives.