What disc should I use to cut stainless steel?

For cutting stainless steel, use thin cutting discs with a special composition free of iron, sulfur, and chlorine (marked as “INOX”). A thickness of 1.0 – 1.6 mm is recommended for clean and precise cuts with minimal heat-affected zones.

What does abrasive grit size mean and how to choose it?

Grit size (e.g., P36, P80, P120) indicates the size of the abrasive grains.

• Coarse grit (P24 – P60): for aggressive grinding and material removal.
• Medium grit (P80 – P120): for finer grinding and surface preparation.
• Fine grit (P150+): for polishing or finishing work.

The choice depends on the material and the desired surface quality.

How long does a grinding disc or belt last?

Lifespan depends on the material type, pressure, speed and cooling. When used properly, a disc lasts for several tens of minutes of intensive work. Belts can last longer, but their efficiency gradually decreases – watch for loss of cutting performance and overheating.

Can I use a cutting disc for grinding?

No. A cutting disc is intended only for axial (straight) cuts and lacks the lateral strength for grinding. Using it for grinding can lead to disc breakage and serious injury. Always use grinding discs with lateral reinforcement for grinding tasks.

Why does my grinding disc overheat and lose efficiency?

Causes may include too much pressure, insufficient cooling, a worn disc or incorrect speed. An overheated disc gets clogged, loses abrasive power, and damages the surface. Work gently and let the disc “cut” instead of “forcing” it.

How to prevent accidents during cutting and grinding?

• Always use protective guards and personal protective equipment.
• Use only undamaged and properly mounted discs.
• Do not exceed the maximum speed limit.
• Grind at the correct angle and without excessive pressure.
• Regularly inspect tool condition.

What protective equipment should I use?

• Safety glasses or face shield – against sparks and debris.
• Respirator or mask – against dust and fumes.
• Gloves – against cuts and abrasions.
• Protective clothing and footwear – flame-resistant, durable materials.
• Hearing protection – when working with tools over 85 dB.

How should grinding belts and discs be stored properly?

• Store in a dry place at stable temperature (ideally 18–22 °C, 40–65 % RH).
• Avoid exposure to sunlight and moisture.
• Hang or lay sanding belts flat, without bending.
• Store discs vertically in original packaging.

Can a grinding disc be used on multiple materials?

Not all. Use specialized discs for specific materials:

• For stainless steel – INOX discs (Fe, S, Cl free)
• For aluminum – open-structure discs to prevent clogging
• For steel – general-purpose steel discs

Improper use reduces effectiveness and tool life.

How do I know it’s time to replace a disc or sanding belt?

• The disc no longer cuts or grinds effectively
• Visible clogging, shiny surface or burn marks
• Cracks, chips, vibrations or deformation
• The sanding belt loses grit or tears