A Brief Guide To Stainless Still End Mills Flutes

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It is always tasking and energy-consuming to choose the correct end mill before you put on your CNC. Many things have to be done like geometry, profile type, length and you also have to ponder on many tradeoffs such as cost, tool life, performance, and surface finishing.

Many people have defined stainless steel end mills to be like a drill bit, but this is wrong.  A drill bit is formed to be plunged straight into the material and create only holes.

But stainless steel end mills will cut horizontally into the equipment and generate profile or slots. Also, the majority of the stainless steel end mills are formed to bring out Centre cutting that is it can dive inside the material and also making it more useful compared to drill bits.

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Quantity of flutes

Flutes happen to be the in-depth spiral grooves that permit token evacuation and formation. These are the stainless steel end mills structure that forms the biting cutting edges also called teeth.

Also, the number or quantity of flutes on your end mills is the important limit dependent majorly on the equipment you desire to pieces and also on the abilities of your machine.

However, the number of flutes which is on the stainless steel end mills will influence the following:

The capacity of the instrument to clear chips

The feed degree of your machine

The finished surface of your piece

Also, the amount of feed is openly connected to the number of flutes of your stainless steel end mills so when you join the flute then you enlarge the rate of feed or you reduce the rational rapidity of the spindle to reserve a continuous chip load.  

You may need to pick an end mill that has more or less flute depending on the speed abilities of your spindle and CNC machine.Furthermore, putting many flutes on the tool will give smoother cuts but it will remain a small space for chips to be clear.


You can overlook this when you are cutting soft material, but this cannot happen when you are cutting aluminum. This is because aluminum gives a huge chip when compared with other materials.

Whenever the end mill is cut down in a slot or hole, its flute gives an important path for the chip to vanish. That is why you need to use 2 to 3 flutes end mill along with aluminum because it got extra chip clearance compared with 4 flutes.

Wherever the chips will block continuously, overlap the cutting sides of your tool, and let it break. For chip evaporation, you need few flutes, as extra flutes give a clean surface finish.


Helix angle

Stainless steel end mills have 30◦ helix angles. When the helix angle is raised, it will decrease the force used in cutting and the number of vibrations and heat gotten in the process of milling. However, end mills with more helix angles will manufacture a nice surface finish on the material.


The helix angle brings a trade-off. When the feed rate is high, the end mills will become weak and cannot withstand a weighty deep cut. However, the lower helix angle is stronger but offers a lower smooth surface finish.


Are you in need of premium stainless steel end mills?

Do you need a machine for your different application and you are not sure of the machine to use. Or you need to work on hard materials and you are guessing the right machine for it. Stainless steel end mills happen to be the best for this purpose.

Contact us today to make an inquiry and purchase stainless steel end mills from an experienced and reputable manufacture. 

If any other question, please contact us:

  • Tel: +86 769-85646282
  • Email: dohre@dohrecnc.com
  • Address: 12#Xin He Industrial Park,Changan Town,Dong Guan City, Guang Dong Province,China

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