The entering angle, KAPR (or lead angle, PISR), is the angle between the cutting edge and the feed direction. It is important to choose the correct entering/lead angle for a successful turning operation. The entering/lead angle influences:

Cheap bits are usually made of substandard material and have a history of overheating and shattering when subjected to pressure. Buying them is a waste of your hard earned money, not to mention that they can ruin or delay your project.

The good news is that they rarely overheat and are highly durable. You can also use them to drill holes in timber is you need to.

This is another important question that you should ask yourself. You should choose a drill bit that is compatible with your drill type.

You should, however, avoid bits made of substandard material regardless of the quality of concrete you’ll be drilling. They’ll overheat quickly and do a shoddy job.

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You can even carry your drill to the store to try the bits before you buy them. This will help ensure you don’t make any mistakes.

There are many parameters to consider when choosing turning insert. Carefully select insert geometry, insert grade, insert shape (nose angle), insert size, nose radius and entering (lead) angle, to achieve good chip control and machining performance.

In this piece, we are going to discuss tips that will help you pick drill bits that match your project needs. The tips will also help you avoid the mistakes that most buyers make when selecting masonry drill bits.

Some drill bits are made of high-speed steel (HSS). These bits are a bit more expensive than those made of low carbon steel.

Consider the type of job you want to do; ensure the bit you choose is compatible with your drill; refer to your pilot chart to know the bit size and length needed; ensure you go for masonry drill bits and avoid the cheap ones.

A large nose angle is strong, but requires more machine power and has a higher tendency for vibration. A small nose angle is weaker and has a small cutting edge engagement, both of which can make it more sensitive to the effects of heat.

When it comes to length, there are standard lengths, but there also long masonry drill bits that range from 300 to 400 mm.

​The insert shape should be selected relative to the entering angle accessibility required of the tool. The largest possible nose angle should be selected to provide insert strength and reliability. However, this has to be balanced against the variation of cuts that need to be performed.

Select insert size depending on the application demands and the space for the cutting tool in the application. With a larger insert size, the stability is better. For heavy machining, the insert size is normally above IC 25 mm (1 inch). When finishing, the size can in many cases be reduced. How to choose insert size

​Turning geometries can be divided into three basic styles that are optimized for finishing, medium and roughing operations. The diagram shows the working area for each geometry, based on acceptable chip breaking, in relation to feed and depth of cut.

Regardless of the of the type drill bit you choose, the golden rule here is to ensure that you pick a drill bit that is made of a high-quality and durable material, which is coated with carbide, diamond powder or titanium carbon nitride.

In most instances, you’ll need a drill bit of standard length, but like we mentioned, there are longer bits if you need something longer.

You need to examine the drill bit shank and ensure it’ll be grasped perfectly by the chuck of your drill. However, choosing a drill bit that’s compatible with your drill does not necessarily mean that you have to buy bits of the same brand. No!

The nose radius, RE, is a key factor in turning operations. Inserts are available in several sizes of nose radius. The selection depends on depth of cut and feed, and influences the surface finish, chip breaking and insert strength.

Use wiper inserts for improved surface finish with standard cutting data, or, maintained surface finish at substantially higher feed rate.

It’s important to ensure the bit you choose has exactly the same size as the hole you are going to make. Going for a bit that is a little bit larger than the hole you wish to create is also fine.

These drill bits are effective in penetrating stones, concrete block, solid concrete, and other hard and soft materials found in the construction world.

Choosing a drill bit that matches your project’s needs can be confusing and time-consuming because of the diverse drill types available. It’s much more complicated than you might think.

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While some are meant for wood, others are specially designed for glass, metals, and masonry projects. Therefore, you want to ensure that the bit you pick is meant for masonry.

If you’re dealing with hard concrete and natural stones, ordinary drill bits are not for you. Go for drill bits that have tungsten carbide or durum tips. They are usually stronger, more efficient, and penetrate hard surfaces better and faster than the typical drill bits.

Zhuzhou Sieeso Cemented Carbide Tools Co.,Ltd. Is a Chinese company that started operations in the year 2019, located in Zhuzhou City Hunan Province where is famous in the world for its tungsten carbide industry.

This will make your job easy and smooth. It’ll also help ensure that your drill will never be damaged by discordant drill bits.

The -WMX wiper geometry is first choice, and is a good starting point for most applications. When conditions change, there is always a productive alternative. Choose a positive wiper geometry to lower forces and maintain productivity in case of vibration problems. Choose wiper geometry as follows: -WL:For improved chip control when moving to a lowerfn/ap. -WF:Improves chip control at a lowerfn/ap. Also for lower cutting forces when vibrations occur. -WMX:Always first choice within the wide chip application area. Provides maximum productivity, versatility and the best results. -WR:When a stronger edge line is needed, for example, for interrupted cuts.

Yes, it’s good to consider the price when buying drilling bits, but that does not mean that you should go for cheap bits.

When selecting a drill bit, you have to consider the material it’s made of. There are masonry drills bits made of low carbon steel. These drill bits are cheap and can be used to drill soft surfaces.

If you go for a drill bit made of HSS, however, make sure it’s coated with carbide, diamond powder, or even titanium carbon nitride. This helps make it tough and good for masonry. The coating also helps reduce corrosion and wear.

The choice of drill bit largely depends on the project at hand. If you’ll be drilling small holes into light concrete or artificial stones, you can go for any masonry drill bit.

If you do all this, you will be able to pick the right masonry drill bit every time you visit a drill bit store. Check out our drill bits for brick work or our products page for various tools and building supplies.

The insert geometry and insert grade complement each other. For example, the toughness of ​a grade can compensate for lack of strength in an insert geometry.