Cordless Grinders

These aren't quite as torquey as the other types (but it's RPM which matters most anyway for drilling). Upside is they don't have any hoses or cables to get tangled with and don't run at mains voltages (check if waterproof before getting too cocky).

Use to...

• Grind through shafts or nuts.

• Grind off heads.

• Grind away paint and corrosion.

• Grind flats onto shafts or heads.

Buying Tips

• Torque is handy, RPM is the key.

• 10,000 RPM or better.

Safety Tips

• Always wear eye protection

• Always wear hearing protection

• Consider impact protecting gloves