FAQ: best angle grinder

Absolutely not! Never use a disc that’s larger than the machine it’s cut out for. Not only does removing the guard expose you to the risk of sparks, the disc is highly likely to come loose and become a dangerous projectile.

These disc are designed to give a longer lifespan. They can generally be safely used all the way down to their backing. They are used with right-angle grinders. Conical flap discs are a smart bet if you need rapid, aggressive stock removal.

It’s not advisable, no. Most wheels designed to slice through metal are aluminum oxide while silicon carbide is the optimal grain for carving through masonry. Stick to the designated wheel for best results.

Firstly and crucially, make sure the angle grinder has an effective guard and you leave it in place at all times. Beyond that, make sure you wear gauntlet style gloves along with suitable eye protection and you can operate safely.

It’s always sound practice to run a new disc for a minute or so in a protected area just to make sure everything is OK. Don’t stint on 60 seconds for the sake of safety.

More than performance, the key difference lies in durability. The spinning bearings and slightly more powerful motors on pricier disc grinders are tailor-made for prolonged commercial use. Entry-level angle grinders are expected to be used at less than full clip on a more occasional basis.

The high speed at which they rotate – averaging 10,000 RPM – means they’re too quick to use for cutting wood. Most wood cutting saws spin at somewhere around 4000 RPM.

Some of them can, yes. Depending on the speed range and appropriate disc, look out for a grinder designed for this application if it’s something you plan on undertaking.

A diamond blade works best for this.

This is what you need for removing mortar.

best angle grinder: Looking for more information?

Interested to learn more in-depth details about selecting the right tool for your needs? Read our Informational Buyer Guide and Frequently Asked Questions sections on this topic for more details.