How to make a lightweight, razor-sharp kitchen knife that doesn't require sharpening

For cutting soft tomatoes, meat and other foods, it is better to use a very sharp knife. However, sharpening it takes a lot of time. In order not to constantly have to edit the knife, you can equip it with replaceable blades, replacing which takes a minute.
How to make a lightweight, razor-sharp kitchen knife that doesn't require sharpening

Materials:


  • aluminum strip;
  • trapezoidal replaceable blades - 3 pcs.;
  • M4 screws – 6 pcs.;
  • blank for handle.

Materials for making a kitchen knife

Knife making process


We cut out a blank from an aluminum strip in the shape of a blade.
Marking the knife

Cut a blank from an aluminum strip

It is necessary to make a marking on it for 3 trapezoidal interchangeable blades, and select the metal using it using a drill. It is important that the cutting edges of the blades protrude from the aluminum base and the edges practically meet together.
Making trapezoidal notches with a drill

Place the blades into the recesses

On the smooth side of the workpiece, a bevel is made using sandpaper.
From the smooth side of the workpiece, a descent is made on the emery

Next, it is drilled through the standard holes on the blades, then a thread is cut into it to screw them on.
The workpiece is drilled and threaded

The blades are screwed on.
Blades are screwed on

The protruding part of the thread on the reverse is ground off.
The protruding part of the thread on the reverse is ground off

The base itself needs to be polished. If there are scratches on it, then dirt will stick to it.
The base itself needs to be polished

Finally, an overhead handle is made.
a knife handle is made

It can be secured with screws or rivets.
secure with screws or rivets

How to make a lightweight, razor-sharp kitchen knife that doesn't require sharpening

The resulting knife is ready for its intended use. In the future, when the sharpness is lost, its blades change.
Cutting paper with a knife

Cutting carrots with a knife

Shredding cabbage

Cutting down a tree

Watch the video



The information is provided for informational purposes only. The manufacture of bladed weapons is punishable by law.
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Comments (3)
  1. Vlad
    #1 Vlad Guests 19 January 2021 09:36
    3
    what nonsense, the knife blade can pass through the object, and it is also more difficult to clean it, plus a tool for replacing the blade, the question arises: why?)))) well, buy yourself a small knife sharpener
  2. Guest Yuri
    #2 Guest Yuri Guests 19 January 2021 18:14
    1
    There are NO knives that don't need to be sharpened.
  3. inkog nito
    #3 inkog nito Guests 20 January 2021 16:46
    2
    250 half-poles out of 250