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Angle grinder discs

Joined
6 Jul 2004
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186
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Location
Sussex
Country
United Kingdom
Can someone please answer a very simple question which has always puzzled me - why do the thicker angle grinder discs almost always have a dished shape, whereas thinner cutting discs are flat?
 
The thicker disks are designed for gringing with the flat face in contact with the work as opposed to cutting discs which use the edge. If you were grinding something flush with the surrounding surface the fastening nut would get in the way, thats why it is recessed.

Jason
 
The thinner cutting disc also removes less material and is therefore quicker. It take ages to try to cut with a grinding disc.
 

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