How to change trimmer attachments

Beard trimmer 9000 Prestige Beard trimmer

Your Philips stylers, clippers and beard trimmers can be supplied with a wide variety of attachments. Learn how to use and replace these attachments.

Cutting unit with projections

Cutting unit attachment

The cutter block is the heart of your Philips styler. It has short and sharp edges and is used to quickly and accurately trim hair to length.

To remove the cutting unit from the styler body, check for the release button on the styler body. If present, press the button to remove the cutting unit.

If your styler does not have a release button, place your finger under the teeth of the cutting unit and slide it out of the appliance. To re-install, insert the bottom of the cutting unit into the styler body, and then push in the barbed section until it clicks. Don’t overdo it; this could damage the instrument.

If you are unable to install the cutting unit, check for foreign bodies in the styler body and try cleaning it with a small brush or cotton swab.

Razor foil

Some Philips stylers come with a shaving foil, which is used to comfortably shave body hair.

To remove the shaving foil from the shaving head, simply pull on it. Be careful! The teeth on the center of the shaving foil can be very sharp. To reinstall the shaving foil, snap it onto the shaving head until you hear a click.

Lugs

The trimming attachments fit over the cutting unit of your Philips Styler. They are used to trim the hair on the head or trim the beard to a specific length.

Removing these attachments is very easy. Just pull on them and they will slide off the styler body. To install the accessory, gently slide it over the cutting unit so that the locking points of the accessory enter the special grooves located on the sides.

Philips clipper attachments

On Philips children’s clippers, the trimmer attachment is removed in a different way. You need to slide it back on one side to remove it from the instrument.

Before attaching this attachment, make sure you install it with the correct side (to cut to the correct length). First, align one side of the attachment with the mount on the clipper body. Then push the other side of the nozzle until you hear a click.

Body care attachments

Philips body stylers come with a dedicated body attachment. To remove this attachment, gently remove the back from the appliance and then remove the attachment from the shaving unit or pull it up.

To attach this attachment, simply place it on the shaving foil until it clicks into place.

Please note that attachments may vary depending on the trimmer or hair clipper used. For details, see the instruction manual or contact us for help.

Body care attachments

Philips body stylers come with a dedicated body attachment. To remove this attachment, gently remove the back from the appliance and then remove the attachment from the shaving unit or pull it up.

To attach this attachment, simply place it on the shaving foil until you hear a click.

Please note that the attachments may vary depending on the trimmer or clipper used. For details, see the instruction manual or contact us for help.

Philips clipper attachments

On Philips children’s clippers, the trimmer attachment can be removed in a different way. You need to slide it back on one side to remove it from the instrument.

Before attaching this attachment, make sure you install it with the correct side (to cut to the correct length). First, align one side of the attachment with the mount on the clipper body. Then push the other side of the nozzle until you hear a click.

Cutting unit with protrusions

Razor foil

Some Philips stylers come with a shaving foil, which is used to comfortably shave body hair.

To remove the shaving foil from the shaving head, simply pull on it. Be careful! The teeth on the center of the shaving foil can be very sharp. To reinstall the shaving foil, snap it onto the shaving head until it clicks into place.

Lugs

The trimming attachments fit over the cutting unit of your Philips Styler. They are used to trim the hair on the head or trim the beard to a specific length.

Removing these attachments is very easy. Just pull on them and they will slide off the styler body. To install the accessory, gently slide it over the cutting unit so that the locking points of the accessory enter the special grooves located on the sides.

Cutting unit attachment

The cutter block is the heart of your Philips styler. It has short and sharp edges and is used to quickly and accurately trim hair to length.

To remove the cutting unit from the styler body, check for the release button on the styler body. If present, press the button to remove the cutting unit.

If your styler does not have a release button, place your finger under the teeth of the cutting unit and slide it out of the appliance. To reinstall, insert the bottom of the cutter block into the styler body, and then push in the barbed section until you hear a click. Don’t overdo it; this could damage the instrument.

If you are unable to install the cutting unit, check for foreign bodies in the styler body and try cleaning it with a small brush or cotton swab.

Beardtrimmer series 3000 Beard trimmer

Your Philips stylers, clippers and beard trimmers can be supplied with a wide variety of attachments. Learn how to use and replace these attachments.

Nose trimming attachments

The information on this page applies to the following models: QT4020 / 10. HC5610 / 15. HC5650 / 15. HC5630 / 15. HC5612 / 15. MG7735 / 15. BT7510 / 15. BT5502 / 15. HC3521 / 15. HC3522 / 15. BT3202 / 14. BT3226 / 14. BT3216 / 14. BT3206 / 14. HC3520 / 15. HC3535 / 15. HC3530 / 15. MG3710 / 15. MG3740 / 15. MG3730 / 15. MG5730 / 15. MG7730 / 15. BT1216 / 10. HC1091 / 15. MG3731 / 15. MG3720 / 15. BT9297 / 15. HC5100 / 15. HC1066 / 15. BT7210 / 15. BT1005 / 10. BT9290 / 32. BT5200 / 16. HC5446 / 80. HC5438 / 15. HC7460 / 15. HC9490 / 15. HC9450 / 15. MG1100 / 16. HC3418 / 15. QT3900 / 15. QG3327 / 15. QG3335 / 15. QT4000 / 15. QT4005 / 15. HC3424 / 80. BT7085 / 15. HC5450 / 15. HC5440 / 15. HC5410 / 15. HC3420 / 15. HC3410 / 15. HC3400 / 15. BT9290 / 15. QG3371 / 16. QG3340 / 16. QT4015 / 15. QC5339 / 15. QC5350 / 80. QT4019 / 15. QT4021 / 50. QC5053 / 00. QC5010 / 00. QC5070 / 00. QC5070 / 80. QC5099 / 00. QT4085 / 70. QC5050 / 00. more less

Easy to maintain

A trimmer is primarily a mechanical knife system. They must be periodically cleaned or even oiled. High-end models can usually be flushed under running water and do not require lubrication with machine oil. Sharpening occurs directly during use.

Convert A Dewalt Brushless Max String Trimmer For A Universal Head

For a beard or mustache: tips for choosing a trimmer

Many men prefer a typewriter to machine tools or electric shavers. This choice is quite justified, since special machines have a number of advantages, which include:

  • compact size;
  • affordable price;
  • the mechanism cannot cut the skin;
  • you can cut even the smallest hair;
  • can be cleaned with water, no foam needed.

To shave with a trimmer, you do not need to steam your face first. They serve the owner for a long time, you only need to occasionally change the blades.

Useful additional functions

The versatility of the device allows you to reduce the cost of personal care. Almost any electric beard machine can be successfully used for cutting body hair. If you plan to use the trimmer frequently for this purpose, a wider head will be needed.

There are models with a vacuum cut bristle removal system. This will eliminate shaving debris because the hairs will be sucked up by the shaving machine and collected in a special compartment. It can be easily detached from the main body and cleaned thoroughly. This allows you to trim your beard even on the go, as the hair does not fall off after using the trimmer with this mode.

There are even illuminated trimmers! Never miss even the smallest facial hair.

Read more:  The Trimmer Starts When You Press The Gas

Important parameters to consider

Noise and vibration levels. Long-term use of the tool may cause fatigue from noise and strong vibration.

Device power. To trim a beard, as well as coarse and curly hair, powerful clippers are needed. at least 20-25 W.

Ergonomics. The handle of the machine must have rubberized pads that do not allow it to slip out of the hand.

Different attachments can be selected

The number of attachments in the kit can vary from 2 to 14, but most of them are rarely used. Fine tuning and adjustment down to millimeters and a contouring attachment are a must-have. It is advisable that the step of changing the cutting height during the transition between the attachments should not be higher than 1-2 mm.

The attachments help you control the length of your hair while cutting. True, there are beard and mustache clippers, in which the length is adjusted with a special wheel.

It is important to pay attention to what material the attachments are made of:

  • steel is strong, but heats up;
  • ceramics does not heat up, but will not survive the fall;
  • titanium blades are sharp and tough, but expensive;
  • an alloy of titanium and ceramics. ideal, but also expensive.

Differ in operating time

Most trimmers have a built-in rechargeable battery that takes eight to ten hours to fully charge.

The term of an autonomous haircut directly depends on the device itself. There are models that can last up to 80 minutes, but there are those that are designed for only 3 minutes. The battery status indicator will notify with a light signal that it is time to put the cordless machine on charge.

Combined models are the most optimal, since they combine the ability to work from the mains and from the battery.

Battery operated trimmers ideal for occasional hair cuts and for those who travel frequently.

How to change the brush head on an electric toothbrush?

As mentioned earlier, the mechanism for replacing the nozzle itself is quite simple. The video explains in detail how to replace the brush head on an electric toothbrush:

Replacing the brush head on an electric toothbrush

In this post, we will take a closer look at how to replace the brush head on an electric toothbrush. This is done quite simply and quickly.

Using an electric toothbrush requires you to periodically replace the heads with new ones. As we already know, replaceable attachments need to be changed at least once every three months. But if you have just recently switched from a regular toothbrush to an electric one, the question may arise. how to do it correctly? The mechanism itself for changing the nozzles is quite simple, takes little time and requires minimal effort. Even a child can change the brush head on an electric toothbrush!

When we buy an electric toothbrush, we receive instructions on how to use it. But the situation is completely different with toothbrush heads: rarely does a manufacturer write detailed instructions for replacing a toothbrush head with a new one. It is not a problem to replace the nozzle if you have already done a similar procedure before. Either at least they saw how other people do it.

But what to do if you are going to replace the brush head on your electric toothbrush for the first time?

What you need to know about replacing your electric toothbrush heads?

We have already mentioned the frequency of replacement of the nozzles. What other nuances or precautions are there in case of replacing a replaceable brush head on an electric toothbrush??

As with any hygiene product, it is worth paying attention to a number of general rules. They are more about personal hygiene and respect for replacing the element itself. a replaceable nozzle:

  • Wash your hands with soap and water before proceeding.
  • Open the packaging of the attachments carefully to avoid accidentally dropping them on the floor.
  • Remove the old accessory and replace it with the new one.

These rules are pretty simple, but they shouldn’t be ignored. One of the most important rules, which, in fact, does not apply to the process of replacing the nozzle itself: before proceeding to replace the nozzle, be sure to wash your hands with soap and water. This is a necessary measure to prevent the entry of various harmful microbes into the body.

What is the procedure for replacing heads on electric toothbrushes from different manufacturers?

The situation is such that the device and principle of operation of different electric toothbrushes are the same: the lower element is responsible for the mechanism that provides vibration and operation of the entire toothbrush, and a replaceable nozzle is put on the upper one. Therefore, on top we will always have a nozzle, respectively, the answer to the question “how to replace a nozzle on an electric toothbrush” is the same for different manufacturers. we remove the nozzle from above, and put a new one in its place.

To summarize, it doesn’t matter whether you have an Oral-B or Philips Sonicare electric toothbrush, the principle of brush replacement does not change. In any case, a nozzle is put on top of the toothbrush, and to replace it, you will need to pull out the old nozzle with a slight movement to put on a new one.

Advantages of Pedicure Sandcaps

How to remove the attachment from the manicure machine

In the handle of the manicure machine, the cutter is held by a manual, semi-automatic or automatic clamp. The technology of replacing the nozzle depends on its type.

Problems when replacing the tip

Consider when you can cope on your own, and when it is better to contact the masters.

You removed the cutter, after that you clamped the collet, and now you cannot insert a new accessory.

You cannot leave the device without a nozzle. If you do not plan to use it, use a plug or just leave the cutter in it. If you have clamped an empty collet, it will most likely require a bulkhead.

The nozzle does not lock into the collet.

Most often, the reason is that there is dust inside the cartridge. You can also clean the mechanism at home. To do this, it is enough to untwist the section counterclockwise and dust off the parts. You can not wipe!

You need to untwist the cartridge with your hands, if the process is very tight, you can use pliers, but put a napkin between the sponges and the handle.

If cleaning does not help, it is highly likely that the collet mechanism itself is worn out and needs to be replaced. in whole or in individual parts.

The cutter cannot be removed.

The reasons can be very diverse. from the failure of the collet mechanism, clogging of the brushes and even a breakdown of the motor to incorrectly selected nozzles. At home, you can only try to disassemble the cartridge.

If we are talking about a handle with a manual clamp, then it is possible that you have overtightened it. This happens if you use a wrench when changing the nozzle. This cannot be done! The wrench is intended only for tightening the mechanism; to change the cutters, it must be untwisted and tightened only by hand. The solution is to replace the washer and possibly the shaft.

The cutter broke.

The options for an independent solution are as follows:

Unscrew the mechanism. As if you are about to remove the cutter. Briskly swing the handle up and down (the tip is at the bottom). the rest of the shank can come out by inertia.

  • Glue the parts of the nozzle with super glue and then try to pull without moving the cutter from side to side. This must be done very carefully, if glue gets on the collet, it will have to be changed.
  • Important! If you do not have the necessary skills, when disassembling a cartridge, there is a high risk of assembling it incorrectly. On the Internet, you can find tips to simply photograph the stages of the process, but even in this case, you will need to pull off the collet so that the cutter does not scroll when working. We recommend contacting specialists.

    Read more:  How To Wind The Line On The Trimmer Reel?

    How to remove the attachment at different clamps

    Manual clamp

    It is usually installed on cheap devices intended for home use. Consists of washer and button.

    To remove the cutter, you need to press the button (located on the body) and unscrew the washer. after that the nozzle can be easily removed. To install a new one, press the button again and now tighten the washer.

    Such a clamp is not intended for frequent changing of attachments; due to regular use, it can quickly break. Not designed for a large number of revolutions.

    Semi-automatic clamp

    In these, a collet is used. a split sleeve, in which the nozzle is clamped.

    To remove the cutter, you need to make a half turn with the upper section of the handle (ring) clockwise until it clicks. The attachment can then be removed. To secure a new one, turn the section in the opposite direction.

    Semi-automatic collet chucks are one of the most common. They are used in Strong devices.

    Automatic clamping

    The nozzle is clamped automatically when the device is turned on. Therefore, to remove it, you just need to turn off the machine and pull on the cutter. The new one will be fixed at the start of work.

    With such a clip, it is easiest to change the attachments, but they are installed in expensive devices, often in machines with a built-in vacuum cleaner.

    Cutter for manicure drop: advantages and features of use

    The teardrop-shaped nail cutter, also known to the masters as the “flame”, is in the arsenal of almost any professional.

    Gemei GM 595 trimmer 3 in 1 ProGemei electric shaver for hair, beard and mustache

    DELIVERY to the address in Moscow (180 rubles) and Moscow region (10 rubles / km). by courier, to the metro in Moscow (120 rubles), in Russia. By mail on a prepaid basis (220 rubles), or without prepayment by Cash on Delivery (270 rubles).

    Trimmer GM 595 Gemei. quality 3 in 1 set at a super price.

    Power: 50/60 Hz, 3 W

    Battery life: 45 min

    Charging time: 8 h

    Charging indication: yes

    Cleaning type: dry

    Cord length: 50cm

    Shaver size without attachment: 10.3 cm

    Included:
    Trimmer
    Trimmer attachment. for nose and ears
    Trimmer attachment. for beard
    Trimmer attachment. Razor
    Adjustable nozzle
    Charging cable
    Butter
    Cleaning brush

    Hair clipper SINBO SHC 4369. For boys and girls. A budget option for a good trimmer. Advantages and disadvantages. How to change attachments.

    By the way, cutting hair with this trimmer is as easy as shelling pears, you just need to position the eye correctly;

    SO LET’S BEGIN.

    • GENERAL INFORMATION, PACKAGING AND APPEARANCE.

    Full title. hair clipper SINBO SHC 4369;

    ;

    The trimmer machine is on sale in a small beautiful box. There is an instruction.

    • KIT INCLUDED.

    It is recommended to store the machine directly in the stand. The stand is stable. Wide.

    There is a charging input on the bottom of the trimmer. By the way, the charger socket goes through the stand. I fixed it and forgot it! A haircut, or a shave, it doesn’t matter. Did the job and, if necessary, put the machine right there on the charge.

    The charger has a nice long cord. Convenient to operate the machine even when plugged into an outlet.

    Stihl Line Trimmer- How to Quickly Exchange the Head in 20 seconds.

    On the outside of the device there are 2 switch buttons: bottom. on off; top. switch for the length of the step stroke of the blades. The trimmer has 2.

    The volume of the trimmer is average during operation. The machine is not quiet, but not loud either. Buzzing standard so to speak.

    • DESCRIPTION FROM THE OFFICIAL SITE OF THE MANUFACTURER.

    Multifunctional hair clipper.

    Blades are made of stainless steel.

    Includes attachments to remove unwanted hair from nose and ears, beard trimmer, beard shaver, hair clipper attachment, precision trimmer, and combs to adjust the length of your hair.

    • SPECIFICATIONS.

    Power supply system. from the battery;

    Battery life (max). 50 minutes;

    Charge time (max). 8 hours;

    Number of replaceable heads. 5 pieces;

    The number of attachments included. 5 pieces;

    • HEADS. NOZZLES. Nozzles. combs to them. How CORRECTLY CHANGE HEADS. NOZZLES.

    The hair clipper has 5 heads in its set. nozzles. Now I will show each of them more closely, and then I will try to explain how to change them all the same (remove / put on the trimmer body).

    Full size hair trimmer head. Easier to say. this is the main head-nozzle that shaves the head bald. “Snatch” from the back of my dad’s head, my daughters and I had time, the nozzle is very sharp, it cuts perfectly! Shaves almost to zero. Leaves a hair length of about a millimeter. Shaves quickly. And qualitatively.

    This nozzle comes with 4 nozzles. giebnya with different lengths of hair required for cutting: 3 mm, 6 mm, 9 mm and 12 mm. Combs change very quickly and easily, with a slight movement of the hand along parallel to the head.

    I did not use combs. For a kid’s haircut, to trim the ends of my daughter’s hair, I only needed the main head itself. There is nothing difficult in a haircut, the main thing. so that the child sits calmly and does not move. This time. And the second. clear eye. the line should be even))
    The daughter’s hair at the ends is a little curly, it is difficult to bring it out evenly. Experience is required. But everything that comes, there would be a desire))

    Hair should be combed as evenly as possible. Turn the machine upside down. Press a lock of hair with a comb and “venerate” machine immediately below its teeth. This will make the cut smoother.

    Trimmer head for precise cutting. To be honest, I can’t fully understand this head, it’s just a little bit basic. What’s her goal? What is it for? Perhaps at the final stage, after cutting with combs of different lengths. As if the final touch. maybe.
    . I’m not a hairdresser, I’m just learning))

    This head comes with one adjustable comb-comb. The specified hair length. 4, 5, 6 and 7 mm. Adjustment in the same way, moving parallel to the head up and down. Step. one millimeter.

    Special trimmer head for clipping. As far as I understand, it is she. for the beard. To draw a clear line-border of its contour. And to trim the mustache. Small. Neat.

    change, trimmer, attachments

    Nose trimmer head. Plastic nozzle with a metal blade in the form of a thick rod.
    Useful nozzle Very useful on the farm. Men, I know, cut hair with it not only in the nose. But also in the ears.

    I could not resist and tried now the gadget on myself)) And although the hairs from my nose do not stick out , but sometimes one, but it seems treacherous. I have to tweezers it.
    And the trimmer is MORE CONVENIENT! And it doesn’t hurt at all, as it might seem at first glance) She cuts at the root, does not injure the mucous membrane!

    Shaving head. It is collapsible. To make it easy to clean. And wash. And dry.

    The trimmer comes with a small cleaning brush and a bottle of “machine” oil. The insides of the machine are lubricated with oil. For longer lifespan.

    • HOW TO CHANGE THE HEADS.

    oh, and we were worn out with this question at first!

    The head can be removed easily, you just need to pull it slightly up and down. But put on another.

    Hard. Fair. You need to know how and where to push. I had to repeatedly touch the power button, and the machine began to hum just like this, “naked”.

    Found a video on YouTube, watched 100 times. And they changed the nozzle.

    And then already. a matter of technology. And dexterity. The head is put on as if at an angle, with strong pressure on one side. Downside. Where there are no puzzles. In order not to break them.

    Hair clipper SINBO SHC 4369 I RECOMMEND. This is just the BUDGET model of a good trimmer.

    • . once again about the ADVANTAGES and DISADVANTAGES of the device for caring for the exterior.

    first about the pros:

    bright and stylish unisex design;

    a large number of attachments and combs included;

    Read more:  How to Choose the Most Suitable Trimmer For Home And Cottage

    stable stand for trimmer and accessories;

    not loud when cutting or shaving (the noise level is standard for this type of technique; and certainly not louder than a hair dryer);

    long power cord;

    the ability to work mobile or directly from the charger.

    now a small minus:

    DIY trimmer attachment

    For many summer residents, the trimmer has long become a familiar and almost irreplaceable technique. But it is not always possible to purchase a model that meets all needs. It happens that the trimmer copes with fresh young vegetation easily, but there is a desire to clear a place behind the fence or along the access road, and the tall ripe grass turns out to be too tough for the technique.

    DIY trimmer attachment

    We offer the option of self-production of the trimmer head from simple (almost improvised) tools.

    Materials:

    • metal perforated plate (100 mm x 240 mm)
    • 2 hacksaw blades for metal
    • 4 screws and 4 nuts M5
    • 4 washers and 4 oversized washers

    From a safety point of view, hacksaw blades should not be completely hardened.

    Everything you need to make a nozzle

    The most difficult thing in making a nozzle is to symmetrically mark and make holes for the knives and the trimmer shaft. That is why a ready-made perforated plate is chosen.

    Progress:

    First you need to make the base of the nozzle. To do this, cut a square with a side of 100 mm from a metal plate of an angle grinder. You need to mark it in such a way that there is a hole exactly in the center (at the intersection of the diagonals). To do this, measure a distance of 50 mm from the center of the selected hole perpendicular to the short side of the plate and outline the cutting line for cutting.

    We mark the base of the nozzle

    Cut off the excess and get a square of 100 mm x 100 mm. Now you need to round off the corners a little and drill out the central hole for the trimmer shaft.

    Round off the corners and drill the center hole for the trimmer shaft

    Cut the canvases for metal, measuring 8 cm from each end.We get 4 blanks with ready-made holes.

    We cut canvases for metal

    These blanks need to be shaped like knives. To do this, we outline the cut line by eye (special accuracy is not required), fasten all 4 blanks together and grind off the excess.

    Cut out knives from blanks

    As a result, we get knives of the same weight and size, they can be sharpened a little on one side. Now all parts of the homemade trimmer attachment are prepared, you can start assembling.

    Everything is ready for assembly

    Put a small washer on the screw and insert it into the corner hole. We put on the knife from above, placing the sharpened side in the direction of rotation of the trimmer shaft. This is followed by a large washer and a nut that is not tightened so that the knife rotates freely. We attach the other 3 knives in the same way.

    Fixing the knives

    The end of the screw must be riveted so that the nut does not fly off.

    The end of the screw must be riveted

    The attachment is ready. It is installed with nuts to the ground and fixed in the same way as the three-blade knife that comes with the trimmer. When colliding with a stone, the knives fold and go inside a little.

    This idea was suggested by our regular video author Tatiana (Tula region). You can see in more detail the whole process of making such a trimmer attachment and find out some of the nuances by watching the video that she prepared.

    When working with a trimmer, it is important not to forget about safety, using any attachments, especially homemade ones.

    We suggest discussing this idea in the comments to the publication. Share your thoughts with us, and also tell us about your good solutions.

    Without accepting any of the sides of this sharp (literally and figuratively) discussion, let me show you one of the latest models of lawn mowers from the German company Robert Bosch. It provides for both a deflecting knife and an arcuate bracket, which excludes the “striking” of the knife on objects not foreseen by mowing. I show the general view of the lawn mowers and the knife itself, in two positions. General view of lawn mowers

    Knife in a deflected state

    Folded knife

    Good evening everyone!
    Exactly three years have passed since the discussion of the “acute” problem for the trimmer. Over the past 1000 days, a clear picture has emerged: “Glory to the author. the craftsman who conducts an experiment on himself to reach the yield point of the metal from which these knives are made. He has every right to risk his own health. ” Nowadays in stunt films you can often see a frvza. “Do not try to repeat the movie stunts that were performed by professional stuntmen.” The very first article should have ended with something like this:” Dear summer residents. This is my personal experiment. If you are unsure of your plumbing skills, please do not repeat it. AND THE MOST IMPORTANT. I am not responsible for the operation of the tool, made in the footsteps of my article.”
    And the last thing. Do I see errors, judging by the photographs, of the execution of this tool. Yes, I see, and a rude one. Look closely at the plate, which is the carrier for the four knives. Look carefully at the FAR RIGHT HOLE in the photo.

    Alas, the author of this device does not even suspect how the hole for the shaft should be made.

    I inform you that the distance from the point of the hole closest to the edge of the plate to the very edge should be NOT LESS than the diameter of the hole itself. Students of mechanics will learn this truth no later than the second year of the institute. What do we see here? A thin isthmus resembling a narrow PEREKOP, making a peninsula out of the Crimea. This is a priori the place that is weak in this design. it experiences the same loads as other knives, but the “digging” there is very thin.
    Where it is thin, there and.
    I would like to hope, and quite sincerely, that over these three years this isthmus has not undergone loads comparable to the yield strength of this metal, but rather the alloy from which the perforated plate is stamped.