SHDIATOOL4-1/2 Inch Diamond Cutting Grinding Disc Fits 5/8-11 Arbor for Marble Ceramic Double Sided Vacuum Brazed Fast Cutting Shaping Grinding Wheel

This wheel just EATS fiberglass. It's lovely. Try to keep away from sticky things, metals, and paints, and this wheel should last you forever.

Excellent for cutting and shaping porcelain tile.

It's a beast on glass wet or dry. Always be careful and mindful of glass dust even in a mist. But it cuts like butter dry and you don't have to baby it. So be careful and you'll be happy with this wheel. I have not used it on any other material.

This is the real deal. I’ve used mine constantly for about a year and it shows no sign of stopping. It works well on everything - hard plastic, metal, stone, and concrete. I have not used it on ceramic or glass. It’s not much on wood. The screw on attachment and flat surface have been helpful. This is a good price too. I paid $100 for a similar blade at a fair and still consider it worth the money for what it does. (Those grinding blades that can break are eye killers if you forget your safety glasses).Update - a year or more later…. Still cuts though the edge is not what it was. It has seen a lot of action! I should have said in the previous post that this blade is not best for cutting aluminum as it melts or smears and fills the cutting grit. The same can be said for materials or wood covered in healthy latex paint. The blade is also not designed for cutting or sanding wood, but knocks off rough edges if you’re in a pinch.

This cutter slices through concrete with ease.

I used this as a "cup wheel" basically to prep the stone after hand cutting and for shaping before using the polishing pads. It helps not wear out your low grit pads so fast and it just grinds the stone better than the most aggressive polishing pads do. After hand cutting use this tool to straighten and flatten the edge or if it's a curve you would use it to tune up the curve and get it to 90 degrees. Or even if you were doing a threshold and you needed to make a big Hollywood bevel. This tool is what you would use. It's not the best I've used but you cannot beat this for the money. I used it on actual granite. It would also work for marble and quartz. For small cuts on marble or granite it would be fine too. But not for big cuts. You would need a real blade. It would cut concrete and brick like butter though.

The media could not be loaded. Big knob on one side they vaguely show. Not sure if it is on properly. No additional washers etc. No instructions!

Specifically because it’s too dusty to grind inside. Wear a respirator. This disc worked great on the ceramic and porcelain I needed to shape. It went through at least 50 tiles dry with no problem. I’m sure it could’ve gone farther, but that was the extent of this job.