How to attach a bit to a drill

Why crowns stink? I’m going crazy already!!

It’s been a year since I had it installed, I started to notice this smell. It’s the corona, it’s that horrible, babka smell. Everyone with a crown stinks like that. I have a set with a ledge, in Europe, metal-free ceramic, the specialist is very strong. 30 years of practice, authority in my field. Where is that smell coming from?? I’ve been flossing and irrigating after every meal and I’ve been cleaning everything with a paste, but the smell is stale!! Not from the throat and not from the stomach. but definitely from the crowns! And there’s always this. then under one smells, and the next day from under the other, and under the first. ♪ no ♪. I don’t know what to do! Is it an inevitability. ♪ the smell from the crowns ♪. I’m on the verge of hysteria. I just can’t get over it, I feel like a smelly old lady! I happen to have terrible teeth, so I had to get these damn crowns! Help. what to do.

Hmm, I don’t know that smell. It makes me want to smell it

If it stinks, it’s not the crowns. There’s nothing to stink about. It’s probably your teeth that stink. Like. decaying under the crowns

Even the best craftsman can make a mistake. A shaky hand, bad mood, bad light, etc. It’s not the crowns that smell, it’s the inflammation. Either the crown is on the gum somewhere, or the teeth themselves are rotting. You have to take the crowns off and go see what’s underneath.

That’s a great topic! looks especially good in the forum-face.

It’s the teeth under the crowns that smell. They may have to be removed altogether.

No, the smell is certainly not normal. My dad had a regular doctor put crowns in a municipal clinic)) and he does not smell (tbt).

Most likely yes, you need to take it off and put it back on.

and you can’t ask a specialist? In general, metal-free crowns are very expensive. And if there is an odor. Then it’s the dentist’s fault. Especially if you’re in Europe. Come and say that the smell, if you’re embarrassed to say so directly, think of a reason, like uncomfortable or bad in the mouth. In general, in order not to lose his reputation, the doctor will redo or eliminate the cause for you.

If your hygiene is fine, if you use toothbrushes, irrigators, and toothbrushes, and there is an odor. there’s something wrong under the crowns or in the surrounding tissue. Or maybe dental calculus was not removed and it smells under the crowns. go to the dentist and get a panoramic scan. So that the roots and all the surrounding tissue can be seen. and re-treat.

I’m surprised it hasn’t been written that crowns need to be cleaned by a doctor every six months. I’ve had it for over half a year but it’s not coming out yet.

The reason is that saliva and microscopic food debris get under the crowns.

s, cavities formed at the top of the crowns, under the gums, it often happens when the crown at the top is made like a barrel, I have one such crown, I will remove because of what I have described to you. In Europe they sell little plastic brush hedgehogs, like a hedgehog for cleaning bottles, but very small, these sets of 6 pieces sold in the same place where they sell floss. My advice. Get some Lacalut toothpaste. It’s great for your gums and brush after every meal.

I’ve had a crown for 14 years. and so far, God bless it

Polishing wheels and nozzles for drill or electric screwdriver: types, materials, choice of discs

No matter how carefully you drive your car, the paintwork will become chipped, scratched, and “worn out” over time. These damages are caused by careless driving, driving on unequipped roads, by temperature fluctuations. To renew the paintwork, it is enough to prepare an angle grinder and pick up the appropriate polishing wheels for car polishing.

Materials of grinding wheels

Minor abrasions and small scratches are removed with furring disks. For hard-to-reach spots wool products are used. Polish wheels are selected depending on the abrasiveness of the paste, the place of work, the diameter of the area to be treated.


Felt discs are more popular for body polishing. There are several types of products, depending on the degree of wooliness. Thick-wool polishing nozzles on a drill are faster at repairing serious damage on painted surfaces. Finer fleecy discs are used less often.

Felt polishing pads are available in diameters of 70-250 mm. The width of the polishing layer at the same time does not change.


Felt circles are used at the stage of basic processing, for soft polishing, before the final polishing. Features of felt products:

used for treating various types of damage; effective for polishing metal; suitable for treating headlamps, glass and plastic parts.The felt polishing wheel should periodically be moistened with water. So it polishes several times more effectively. Almost all types of paste can be used with felt disks.


The felt fluff starts to act like a very fine blade when the polisher operates at maximum speed. Through the use of such a polishing wheel for angle grinder scratches on the paintwork is ground into a thin line, which is then easily removed by a softer polishing wheel. Compared to a foam product, the latter only rolls the edges of the scratch, so it is not effective in removing medium to deep damage.

A medium and coarse polishing paste is used for the furring disc. Another advantage of the fur polisher is that it warms the paint surface significantly less, which reduces the risk of burning through the finish layer.

Rules of work with fur tips made of natural materials:

  • The disc is attached directly to the substrate. A 1 cm foam pad should be used when working on projections and ribs.
  • The 3M polishing wheel should be washed with a lukewarm soap solution after use. Dry the furring fibers by idling the grinder at maximum speed.
  • Achieve effective use of the furring disc after it has been “tramped on”.
  • You have to go through several cycles. work, washing, drying.
  • Brand-name polishing pads are made from natural sheepskin. Such products do not shrink even after several dozen washes.

Other types

When abrading bodywork with a grinder, wool discs are often used. They can quickly remove traces of oxidation on the paint and scratches. When using wool discs for car polishing, the total time of work is reduced, if compared with foam products. The paintwork heats up considerably less.

The main disadvantage of wool tips is that they leave circular marks. You will need more abrasive compound to work with these discs. However, not all wool products are designed for harsh abrasion.

Vulcanite polishing tips can make metal shine. They are also known as rubber discs. These products are made of rubber. The material is vulcanized and then the abrasive is added. Vulcanite product removes hundredths of a millimeter of metal surface.

For the roughest treatments, abrasive discs are used. The abrasive used is titanium chromium, silicon carbide, electrocorundum. 3M straight profile polishing disks are used more often. All characteristics are indicated in their deciphering:

attach, drill

The most common are 3M polishing wheels. Products of this manufacturer last for several years.

Stiffness of grinding wheels

Manufacturers indicate the degree of hardness of products, indicating its specific shade:

In addition to hardness, the wheels for polishing are characterized by the type of surface. embossed or flat. Hard polishing wheels remove chips and cracks from the paintwork. Medium and high softness nozzles are used to create a glossy surface, as well as for the treatment of headlights and stainless steel elements of the car. High relief products of different hardness are used for high volume of work.

The choice of paste also affects the quality of the end result. If the hardness of the wheel and the polish do not match, it is easy to damage the material being machined.

Selection by type of polish

The type of polishing discs can be selected according to the tasks required. Car polishers polish bodywork, headlights, glass, wooden elements.

For headlights

For polishing headlights usually use ready-made kits by American brand 3M. They include P500 car polishing tips on a paper or synthetic base with a diameter of 150 mm. They are universal and suitable for woodworking, sanding composite materials. Fine grit products are used for headlamps.

When polishing light elements, an abrasive on a foam base is used. High cutting performance and less blockage due to semi-open grit filling. The soft edges of the disc remove damage better from corners.

For metal

Each metal polishing wheel is flexible and resilient. These characteristics allow the polishing head to press firmly onto the surface. The following products are used for polishing metal:

Correct choice of nozzle is possible only if you know peculiarities of the processed surface and the required roughness level.

For stainless steel

Stainless steel processing involves several steps. Grinding wheels with P180 grit and aluminum oxide are used initially. It is better to start with a finer grit. If there are no changes on the treated surface, after 4-5 strokes, it is worth using a coarser bit.

Wood circular saw. Pick any size

Some people call a circular wood saw a end mill for good reason. the material is treated almost identically, and the tools look similar. The mentioned tooling, though it leaves much chips, but allows to get clean through holes in the wood using a regular power tool.

How to insert Drill bit into drill machine

Design of a wood circular saw

The saw blade of such a saw is a cutting crown, whose number and profile of teeth depends on the strength and relative humidity of the wood. Most manufacturers of wood ring saws produce drill bits in sets that allows using the tool for processing drywall and even metal.

Saw blade itself consists of two parts: a cutting head and a shank. High-quality tool steel of 11XF, KHS or 9XVG types is used for making bimetal cutter heads that are designed for works on wood, while the cutter head for works on metal can be of tungsten carbide as well.

The shank is made of hardened structural steel such as 45 or 40X steel, and is brazed to the cutting part with a highly resistant brass alloy. On the opposite side the shank has a slots for an electric drill chuck.

For a tool with normal fixture, the end part of the shank is hexagonal, but in the new models it is integrated into a quick-action chuck.

Since during the processing of wood with a circular saw a significant amount of shavings is formed, the tool design provides a spring by which the shavings stuck between the teeth are removed to the outside.

The technological parameters of the wood ring saw are:

  • Height of the working part of the bit, which determines the depth of the volume of wood that the saw removes in one pass. By default it is standard and equals 40 mm. Depending on the hardness and fibrousness of the wood, it allows obtaining cavities to a depth of 3538 mm.
  • External diameter of bit’s cutting part. Sets include bit sizes from 30 mm to 150 mm. Installation options are determined by engine power and RPM control: for wood ring saws with a diameter of over 110 mm, the RPM of the drill must be reduced to a minimum, or a special stand must be used.
  • Tooth profile, which depends on the material to be cut and the function of the bit. Reversible saws are available, allowing to change the direction of their rotation. Such saws are more convenient for the craftsman because they make it possible to hold the drill while working with both the left and the right hand. But when working for a long time they become hotter and finally they start not to cut wood but peel off its surface layer, worsening the quality of cut. Tooth profile of such saws has a triangular shape extending to the base.

Operating features

Due to the high contact area between the saw and the wood, the tool becomes very hot when working. That’s why continuous non-stop work with wood ring saws is impossible (unless air or water cooling system can be adapted).

Circular saws are often referred to as kit saws, which is explained by the composite design of the tool. The way of connection of the shank and the cutting part is very important for this kind of tool. Possible solutions:

  • Flat file. In this case the wood ring saw can withstand the minimum possible shearing loads and should be used for a short time, removing a minimum amount of material per pass. The diameter of the nozzles usually does not exceed 30 mm.
  • Brazing with shank seating in the crown piece. The reliability of fixation increases, therefore such saws are produced with increased diameter. up to 127 mm, and it is possible to work with them for a longer time.
  • Same as above, but the shank is additionally supported on the collar at the top of the bit. This option is used in circular saws of 150 mm and larger (saws of up to 210 mm in diameter are known), because the thermal expansion of the material during sawing will not cause deformation of the set tool.

In practice, wood ring saws are installed in special turret-type chucks, which, when rotated in the chuck, expose the required diameter of the crown bit to the trimmer’s line.

A coupling nut is used to secure it, and a drill bit included in any set is used to center the hole to be drilled.

The drill bit protrudes behind the working surface of the teeth, and the required coaxiality of a blind hole is thus guaranteed.

However, such design requires change of number of revolutions of the drill shaft: at the initial stage, when working with a drill, the required torque is low, so the number of revolutions is more rational to increase. Then, when the teeth of the circular wood circular saw come into action, the load increases sharply, so the number of revolutions of the drill is reduced.

Recommended RPM for work with wood with average (7585%) humidity:

  • for pre-drilling. 17502000 min-1;
  • to obtain a blind hole. 7501000 min-1;
  • for finishing the formative part of the obtained hole, its countersinking and other similar operations. 1000 1500 min-1.

How to choose the right circular wood saw?

Since there are always considerable shear forces when working with the tool in question, circular saws should be preferred, whose design provides solutions to ensure the necessary accuracy of work. For example, the presence of hardened steel centering pins on the bearing surface of the shank provides additional alignment of the drill bit. In this case, the height of the pin should be not less than two of its diameter.

Let’s choose the best wood drill bits: 45 mm, 50 mm, 60 mm, 68 mm, 72 mm, 100 mm, 110 mm

How to make a quality large round hole in wood fast. For this, the craftsman will need a wood crown, with which a circular drill is provided. Besides a large-diameter wood crown, the handyman needs a regular drill and some time.

The depth of the hole can be from a few millimeters to several centimeters. To compare the effectiveness it is customary to compare the result of ring drills with drill bits, with the latter being 4-5 times more productive during other equal conditions.

Wood drilling crowns are sometimes called circular saws, which largely reflects the essence of their work.

What is a wood bit??

Spray bit for processing plywood, chipboard, plastic, metal. a well-known device called a drill bit for wood and other materials. It looks like a bowl with teeth along the edge of the rim.

It is put on a special chuck for a drill and rotates thanks to a power tool. The depth of the hole can be different, from a few millimeters to several centimeters.

The diameter of the cutter determines the number of teeth on it: the larger the wood crown, the greater the number of teeth on it. A typical set of a ring bit is completed with elements:

What is a wood bit for??

The ring bit on the drill, with which you can easily drill a hole of any diameter, is widely used in repair work.

A well-sharpened professional drill bit for wood for undercuts allows you to get a neat notch in the walls, drywall, wooden structures of the required size.

A clean cut with a smooth inner surface without nicks and burrs can be made with this bit. No need for alignment before drilling, sawing is quick and quiet.

Pulley: purpose, types, materials for manufacturing

Can a wood core bit drill into metal??

A core drill bit works very well for its primary purpose of drilling holes. Experts confirm that with its help it is possible to process not only wood.

Wood drilling bit made of special steel grades with sprayed coatings is able to cut tougher materials. It is easy and simple to make a hole in non-ferrous metals of any hardness.

Planning to work with difficult materials, it is necessary to choose a drill bit with HCS marking, such drill bit for hard wood and metal will easily cope with any task.

Spiral drill bits

Spiral modifications are the most common on the market, their appearance is familiar to almost every master.

Spiral (or helical. is their second name) drills consist of a working part, the neck of the cutter and a shank for fastening in the drill. There are two helical grooves in the working part. It is a cutting and chip-removing element.

If the machine has the right capabilities, it is these grooves that feed the lubricant into the drilling area.

Long bar drills (Levis drills) have a spiral shape. Their distinctive features are elongated dimensions, sharpened end. They are used in carpentry work when fastening beams.

Spiral products are generally applicable not only for woodworking, but also for harder materials. Spiral nozzles can range in diameter from 8 to 60 centimeters and in length from 0.3 to 5.2 centimeters. In addition, they can be of two types:

In terms of performance, both types are about the same.

In general, the order of work with spiral drills will largely depend on the diameter.

If, say, the diameter of the spiral nozzle is not more than 14 mm, the drilling speed should be about 1800 rpm for soft wood and 750. for hard wood.

If the diameter is from 14 to 25 mm, then for softwoods you need 1500 rpm, and for hardwoods. 500 rpm. That is, the larger the diameter, the less revolutions are required.

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Which is better a wood crown or a ballerina??

There is an ongoing debate in the furniture making community over which tool to choose. the crown mill or the ballerina attachment. This wood drill bit cuts a hole because of the two sharply sharpened inserts. By adjusting the distance between them, you can get an indentation of any size.

The main difference between the devices is that drill bits have a fixed size, and with a ballerina you can drill a hole of any diameter. There is no definite answer, what is better, it all depends on the specific type of work.

When carving wood, a ballerina will be the best, and holes in ceramics are more convenient to drill with a crown with a dusting.

Preparatory operations for work

It is necessary to take into account that in order to prevent the tool from turning, the manufacturers form an irregularly shaped socket for the seat. The more experienced experts remind that for a good fixation it is necessary to tighten the stop nut or bolt well. This will allow the cutting tool to be held securely in the grooves and not loosen, deforming and distorting the hole.

Install the tool in the drill chuck only after all threads are tightened. Next, you can start drilling at the selected point. The process is virtually the same as working with a classic drill.

It is important to maintain maximum perpendicularity of the rotation axis of the machined plane during the operation. This factor is sustained in the first millimeters, then everything goes according to the originally formed cylinder.

The number of revolutions to rotate the bit is also set in advance. It is worth bearing in mind that an increase in tool diameter is combined with an increase in tool vibration. This forces you to use a more powerful drill, if you take wood drill bits for larger holes and larger diameters. If possible, an additional lever for support and keeping it perpendicular.

When setting the rotational speed on the drill, you should be guided by the following rules

How To Change Drill Bit For Bosch First Time Users | Cordless | Wired | Hammer Models

  • soft wood can be drilled at speeds from 1000 (diameter 3.0-5.0 cm) to 2400 rpm (diameter 10-55 mm);
  • for hard wood it is desirable to increase rpm up to250 rpm (3.0-5.0 cm) up to 600 rpm (1.0-1.5 cm);
  • Using drill bits with carbide tips, you can not reduce the speed below 400-500 rpm, because the cutting edge will crumble.
attach, drill

Cement for fixation

If you can not go to the dentist or buy a special cream in the drugstore, you can make a temporary cement at home. If you do not know how to quickly glue a fallen crown to the tooth at home, this will be the easiest solution.

To prepare the cement, you need to mix corn starch and Vaseline. The result is quite a viscous mass. The crown should be thoroughly cleaned and dried well before fixing it. The construction is then filled with cement and pressed firmly against the gum. The residue is simply wiped off with a napkin. As a material for temporary fixation, such cement, as well as glue, is excellent. However, you should not forget that this is only a temporary way to fix the fallen crown. At the first opportunity to visit the dentist it is necessary to do so.

Thus, there are several ways to fix the structure in the mouth. Some may even say that you can glue the fallen off part with an ordinary piece of gum. Such material, of course, is not suitable in any case, as it is not hygienic and can spoil not only the construction, but also the tooth under it. Therefore, gum should not be used in this situation under any circumstances. Some people prefer not to do anything before going to the dentist. Sometimes this is the surest solution to the problem, because only the doctor can correct the situation and restore the previous condition of all the teeth in the mouth. When going to the dentist, it is important not to lose the lost crown, because it can be fixed on a permanent material. In this case, it will serve the patient for some more time. But re-fixation is possible only if the crown that has come off is not damaged in any way. Otherwise, a completely new design is made.

To avoid problems with temporarily cemented restorations, talk to your dentist about what to do. After the temporary fixation of the crowns, the patient should definitely ask what to do in case of unforeseen situations. The doctor should explain to the patient that the material for temporary fixation is not a guarantee of durability and longevity. Therefore, if someone thinks that temporary cement is suitable for permanent fixation, it is a misconception. Only permanent, strong and practical cement can be chosen for the final completion of the entire prosthetic process.

28.08.2018 admin Комментарии и мнения владельцев No Комментарии и мнения владельцев

A beautiful smile is an attribute of any modern person. It is the smile that attracts attention, mesmerizes and disarms. But no one is safe from such a mishap as a crown falling out, causing our smile to lose its former attractiveness. Often these situations occur at the most inopportune moment, when there is no opportunity to immediately visit the dentist. In such a case, we wonder what to glue the crown on the tooth at home, and look for different options and ways to solve the problem arisen.

Tungsten carbide drill bit

Tungsten carbide cutter bits drill concrete, brick and tile with equal ease. It’s convenient when you want to make a hole for a socket in a tiled wall. The drill is designed for work with a drill or rotary tool with power no less than 800 W without impact. When hitting the rebar, the tungsten carbide tips are removed, so it is better to use carbide-tungsten drills in combination with their diamond counterparts of the same outside diameter when drilling. Price of carbide-tungsten devices from 250

Basic types of drill bits for drilling concrete

How to choose a step and cone drill bit for metal?

How to drill a wall for wiring. requirements, tool selection, technology drilling

Drilling machine drives

Making the project of assembling a holder for the drill with their own hands, you should decide on the type of lifting and lowering mechanism, which serves for the vertical delivery of the drill to the workpiece. This is the main characteristic of the machine. The following mechanisms are distinguished:

Spring-loaded, spring-loaded and hinged units are the easiest to assemble with your own hands. Blueprints of a drilling machine from a spring-type drill suggest placing a spring either directly at the handle, or at the base of the carriage in special grooves. If no additional clamping device is available, it is not possible to mill with these machines, as they require constant manual checking of the drill positions.

Devices based on rack and “star” (gear wheel, car bendix) must also provide additional locks. They can be made, for example, by placing on the mount of the drill an additional screw, working on the principle of a friction. When the cutter reaches the desired position, the screw on the guide is tightened, you can proceed to chamfering and grooving.

Screw-type mechanisms work on the principle of jacks of the same name. They are based on a vertically threaded tube that allows rotation around its axis. On the tube there is a nut welded to the drill holder. As the pipe rotates, the nut and the tool holder change their position. To increase the stability of the tool during operation, it is also possible to fit a friction switch on the attachment.

The rope trolley consists of a tightly stretched metal rope and a rope spool welded to the tool mount, as well as support bars at the upper and lower ends of the rope guide. The metal wire is wound on a spool and tightened on the wishbars so that the weight of the equipment does not cause the wire spool to slide down. The rope ends are wound into loops and remain on the bed. It is recommended that the length of the wire is extra long, so that you can use the same mechanism on different size wire guides.

Concrete crowns for peorator: sizes, types, scope of application

Every man in his life at least once faced with the repair work. Many people try to do everything themselves, without the intervention of outsiders: “My home is my fortress”.

If wallpapering, puttying, painting and other construction work. it is not so difficult, but creating holes in the walls for outlets, pipes and other. it is not easy.

The drill bit is an attachment that is mainly used when it is necessary to make a hole of large size.

There are cases when the drill can not cope with the task, then this tool comes to the rescue. Concrete, reinforced concrete, brick, metal, even plastic can be reached with this tool, and most importantly, you no longer need a long time to try to bring the holes to the required diameter. A few deft moves and it’s done!

Concrete crowns for peorator: sizes and types

This type is used exclusively for work on concrete surfaces. For example, if you need to make a hole for a socket or a large pipe, it can do it perfectly! The device is a metal nozzle with special plates at the base, which are made of pobedite.

Remember! When working with a drill bit, the percussion function must be disabled. This is because the plates made of victorite wear out quickly when used aggressively.

There are several kinds of concrete cutter heads for sale, and they differ in such parameters:

  • Shank type. Can be purchased: hexagonal, cylindrical, SDS-max, SDS-plus.
  • Diameter. Can be from 35 millimeters to 150 (and higher).
  • Type of cooling. Available in wet and dry drilling.

How to make large holes with a pen?

For this procedure, it is best to use a crown, because it has the ability to drill holes of large diameters. Step by step it looks like this:

  • Mark the place of the future hole, then double-check all dimensions, including the diameter of the nozzle itself.
  • Place an edge at the drilling site, run the unit at minimum speed.
  • Increase rotational speed with each subsequent repetition.
  • For convenience and less heat on the workpiece, you may use water, but do not let it get on the tool itself.
  • In a moment, you get a perfectly flat hole of the desired diameter.
  • After finishing, you can tweak the result with a hammer and chisel.

The crown on the peorator for the sockets

This nozzle visually does not differ from a bit for concrete, but it has several differences and is divided into these types:

  • Carbide. Universal models, which have small teeth on the ends. They can work with concrete and brick.
  • Diamond. Able to cope with hard walls and even rebar.
  • Carbide-tungsten cutters. These models can work not only with brick, concrete, but also with ceramic. They are equipped with a hexagonal shank for more convenient work, they are not suitable for metal processing.

How to drill a hole in the concrete for a pipe?

The technology is no different from conventional hole drilling. Choose the right core bit diameter, make a mark on the working surface and switch on the drill. Increase the speed gradually during the procedure, but do not move the tool sideways. After finishing, you can adjust the hole with a chisel and hammer.

When working with a rotary tool and similar tools, you must exercise caution and keep in mind the rules of safety. If you follow all the instructions above, success is guaranteed.

If you’re looking for a comfortable, budget-friendly way to drill holes with larger diameters, such as for undercounter drilling, we recommend getting a drill bit for a torch or a drill. You’ll be up and running before you know it!

How to work correctly with a drill bit

In conclusion, it is worth saying a little about safety when working with a drill:

  • fix the workpiece securely or make sure there are no wires in the wall;
  • securely fasten the drill in the tooling (chuck);
  • hold the drill with both hands. Especially important when working with powerful models;
  • adjust the pressure of the drill;
  • Do not use the reverse until the core drill has come to a complete halt;
  • use personal protective equipment: goggles, gloves;
  • Do not touch the core drill or the core bit for a considerable time after completing the work. getting burnt.

A wide variety of devices, adapters, adapters and attachments for the drill can avoid the purchase of expensive special power tools for repairs and other household needs in domestic conditions. Therefore, buying the right attachment is the simple and optimum solution for the true owner. In addition, some masters make homemade attachments to the drill, but here we must be careful, such a design does not guarantee safe use.