An unusual way is shown to sharpen the knives of a hair clipper - quickly, without a machine, manually, and the result is like with professional sharpening on machines with a conical faceplate.
The machine well cuts not only hair, but also sheepskin, and soft cat and dog hair.
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The old machine began to cut badly over time. It turned out that on the teeth of the knives - and on their planes, and on the cutting edges - there is slight damage.
I decided to sharpen these knives on a 5 mm thick mirror. But not on a flat, but on a curved, curved.
I cut strips 420 mm long and 100 mm wide from the mirror and glued them in pairs with cyanocrylate glue, putting a 1 mm thick wire between them. Each mirror became curved, curved, a deflection of 0.5 mm.
And on such a mirror I sharpened knives. Therefore, the surfaces of knives began to have the same curved shape.
Sharpened in the middle of the mirror, above the wire, in the place where the curvature of the mirror is greatest.
A small amount of diamond paste was applied to the mirror. The knives were positioned so as to create their concavity from the teeth to the heel.
After rough processing, the machine began to cut already well. After fine sharpening, the machine began to cut even better - both human hair and sheepskin.
I’ll tell you why I decided to sharpen the knives of cars on curved glass.
There are different methods for sharpening knives of hair clippers without using a machine.
The easiest way is to grind on an emery cloth. But it is well known that when processing on an emery cloth, the edges of the parts fall through.
They also sharpen knives on cast-iron plates, bars, glasses, and mirrors. At the same time try to get and get a flat surface of the knives.
But professional sharpening is performed on rotating faceplates with a slight taper. At the same time, the surface of the knives that are sharpened is not flat, but concave.
Why do professionals make the concave surface of knives?
With a concave surface of the knives, the contact of the teeth does not weaken as it wears, and the machine keeps working longer and cuts even fine hair well.
Machines with a conical faceplate are expensive, it is not easy to do it yourself. I decided to do without a machine with a conical faceplate, to make a concave surface easier.
I decided to get the concave surface of the knife on a curved mirror. And make the surface curvature of the knife the same as that obtained when processing knives on a conical faceplate.
He bent two mirrors at once, putting a wire with a diameter of 1 mm between them.
Two convex surfaces of the same curvature are obtained for sharpening. Each deflection is 0.5 mm. The surface of the knife when sharpening on such mirrors will be concave.
I believe that for fans, the use of curved glasses is a good, simple and cheap way to sharpen the knives of hair clippers. No need for a machine, no need for a complex faceplate.
And the result is not worse, and maybe better. Because on the faceplate, only one grit is used. To have a lot of faceplates for abrasives of different grain sizes is expensive, unrealistic. And when sharpening knives of machines on the mirror, you can cut many strips under different abrasives.
There is, of course, a minus - you have to grind it manually.
In addition, the glass is rubbed by about 0.02 mm when rough sharpening two knives, while changing the geometry, the bulge of the glass. To sharpen another set of knives, you need to take another glass.
If there is no mirror, you can take just plain glass.
Instead of diamond paste, abrasive paste can be used to grind the valves.
For those who like to sharpen knives on an emery cloth, I advise you to lay under the skin not flat glass, but convex to get a concave surface of the knives.
Thus, sharpening the knives of hair clippers on a curved mirror gives a good result. And this method is fast, cheap, simple. Sharpening two knives, both coarse and thin, takes a total of 15-20 minutes.
26 сен 2024
