Hi,I speak both from my experience and from info available on the net.This is a universal HSS sharpening machine (on cheap side). It uses a diamond coated wheel. It is long time produced and sold under various brands.So- yes, diamond disks are default for what you ask. It is made for sharpening knives, dril bits, scissors and so on. I have one and used it for both HSS and carbide turning bits.The carbon diffusion is something that really happens: clockworkcheval (and all others) gave the right direction . The reaction happens at high temperature. Low speed and water cooling give the longest life (in industrial environment) . In hobby environment, not-often usage and low pressure guarantees long life.In dental industry, diamond coated disks are since long used and I have used them since long on my Proxxon. Edge cutting wears it rapidly - it is a thin layer; speed is highest, local pressure is high, cooling is low through 0.5 mm -or less- thin metal disk. I cannot say which wears first; diamond or carrier. On the sides, tool life is much longer. Nowadays diamond disks are standard in shaping metals and high hardness materials in all Dremel/Proxxon kits.These are my rough conclusions, but I consider enough for hobby workshop. Off course, refining gives best efficiency.
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Knowing how to choose the right diamond cup grinding wheel can be a daunting process. It is important to have a number of factors at work to determine which type of wheel is best for your application.
It is important to determine the intended intent of the type of grinding that occurs primarily. You can break down between dry or wet grinding because they have different uses.
Depending on the economics and quality standards of the equipment &#; dry grinding can be better used for large-scale grinding, while wet grinding may be more suitable for precise cutting.
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Another factor that cannot be ignored when drawing conclusions about diamond cup grinding wheel is roughness. The roughness of the diamond cutting disc ultimately determines the amount of material removed during grinding, which is called the &#;material removal rate.&#;
If it is necessary to make a rapid cut, it is best to consider using a coarser gravel. However, if more careful and precise cutting is required, fine grit will be more suitable for this purpose.
The diamond cup grinding wheel must have the ability to overcome the hardness of the material that needs to be grounded &#; this is where the wheel material works.
For hard non-ferrous metals, synthetic diamond cup grinding wheels are preferred to remove large amounts of these. Otherwise, if grinding with iron or steel, a diamond cup grinding wheel should be used.
The speed at which the diamond cup grinding wheel rotates is critical to avoid the occurrence of defects in the diamond cutting disc thin during use. The diamond cup grinding wheel&#;s rotation rating is measured in meters per second &#; it is best to be familiar with these ratings and accurately use the correct road markings in the equipment to avoid unnecessary repairs to the diamond cup grinding wheel.
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