This product is widely used by welders for removing welding cords and adaptation of holes.
However it is advisable to adopt some precautions so that the rendering is maximum and minimum consumption.
First of all, it is good to remember that all tools suitable for supporting, drilling and cutting require adequate contact pressure. This should not be too high since the tool cooling could be compromised.
In the case of the shank cutter, regardless of whether it is in HSS or M.D., it is necessary to have the possibility of removing without "kneading" that is without the removed slag in the cutting edges.
A classic error is to "push" against the material to remove thinking that a greater force can make a better and faster result.
Regardless of the thickness of the cutting edge this is not true.
The cutters need to "breathe" to scroll through the removed slag and at the same time cool.
Sometimes the head comes off the stem always due to the excessive thermal contribution or splits into splinters.
In this photo you can see a classic tool overheating case due to excessive pressure. Bluish color is the most obvious symptom of overheating.
Another important aspect concerns the number of revolutions. These cutters must operate at a large number of revolutions, normally from 20,000 to 30,000 per minute.
Use with machinery such as drills or low-speed axial grinders determine little efficiency and excessive overheating. That is, it happens that the operator compensates to low performance with a greater pressure by making the described dysfunctions verified.
Summarizing
It is advisable to choose hard metal cutters that have a longer life and can act effectively even on "seizing" materials such as stainless steels or light alloys.
It is important to choose the appropriate compliance with use. The greater the teeth, the greater the ability to remove but at the same time the need for machinery power will be greater.
A good compromise is the "crossed" cutting edge because it allows to control the removal direction without producing "needle" waste, typical of the straight cutting edge, which at the speeds with which they are removed can constitute a serious problem for operators.
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