High-Performance Cutting Disc for Metal and Stone Applications Cutting Disc

Often cutting discs, also known as cut-off wheels, are made from a solid abrasive disc. These discs are often used for cutting metal; they are composed of an abrasive mix of grit and adhesive that is formed into a thin, rigid disc with fiber webbing running through it for strength.
Overexertion and Excessive Pressure: Issue: One of the primary reasons for cutting disc breakage is the application of excessive pressure during cutting. Overloading the disc beyond its design capacity can lead to stress concentrations and eventual fracture.
The reason that cutting and grinding discs have a shelf life is that the resin that is used to bind the disc material together breaks down over time as it absorbs moisture from the atmosphere. This means that an out of date disc could break up during use, with sharp fragments being ejected at a very high speed.
First of all, you should never cut wood with regular angle grinder cutting discs. A lot of professionals advise against using the angle grinder for wood completely, especially for beginners.
Cutting discs are best for cutting through metal and are available in different thicknesses as explained below. For standard, everyday jobs on stainless or mild steel, opt for a 1mm or 1.6mm disc thickness. For cutting thin sheet metals, choose a 1mm or 0.8mm disc.
 

For flat cutting discs, mount the flange with the flat side towards the wheel. Use the key or wrench to fix tightly to the grinder. Once the wheel is in place, it should not move or rotate. Take care not to over tighten the flange, this might damage the disc and make it hard to remove the stub when you're finished.