How to Cut Large Tiles with a Cordless Angle Grinder: A Norton Abrasives Field Checklist

How to Cut Large Tiles with a Cordless Angle Grinder: A Norton Abrasives Field Checklist

If you were hoping to find a router bits catalog, let me save you the scroll: Norton Abrasives does not make router bits. This article is about something else. It's about how to cut large tiles with an angle grinder—and, more specifically, why the tool in your hand matters less than the wheel you put on it.

I coordinate rush orders at a Norton Abrasives distributor. When a contractor calls at 5 PM with a pile of 24x24 porcelain tile and a 6 AM site start, I'm the one talking them through the tool setup. I've handled 200+ of these calls. This is the checklist I use.

The first thing to get straight

There is a Norton Abrasives grinding wheel T1 07660788281. It's a Type 1 reinforced cut-off wheel. I've shipped a lot of them. It is for metal, not tile. I mention it because so many of these emergency calls start with someone saying, I have this Norton grinding wheel, can I use it on tile? Please don't. It'll overheat, glaze over, and on a hard porcelain tile it can actually bounce. You want a Norton diamond blade for tile. The T1 is the right wheel for the day after the tile job, when you have to cut off a metal anchor or a screw.

Step 1: Check arbor size and maximum RPM

Before mounting anything, look at the grinder spindle and the wheel label. Most cordless angle grinders in North America have a 7/8-inch arbor. The Norton T1 07660788281 fits that. Many Norton diamond blades also use a 7/8-inch arbor, but some need a reducing ring, and a few use a 20 mm arbor. Check your grinder manual.

Then check the maximum RPM printed on the wheel. ANSI B7.1 says you can't run a wheel faster than that rating. If a wheel says max 10,000 RPM and your cordless angle grinder spins at 12,500, that wheel is not for you. Norton prints this information for a reason. I don't have hard data on how many people ignore it, but based on the photos I get, it's too many.

Step 2: Use a diamond blade for the tile

For porcelain and ceramic tile, choose a continuous-rim diamond blade. It makes a cleaner cut and leaves fewer chips. With a cordless grinder you have limited torque, so a thin blade with a smooth rim works better than a thick segmented one. The T1 grinding wheel is a metal cutting tool. When I compared a T1 and a diamond blade side by side on the same piece of tile, the T1 just skated across the glaze. That contrast made the point better than any spec sheet.

Step 3: Support the tile so both sides of the cut are stable

Large tiles break when the waste side drops. Put two 2x4s or pieces of rigid foam under the tile, with a gap about an inch wide under the cut line. Clamp the tile near the cut line, but out of the blade path. Mark the cut on the face of the tile, not the back. You need to see the line while the grinder is moving.

Step 4: Cut in shallow passes, not one deep plunge

In my first year, I made the classic beginner mistake: pushed a brand new grinding wheel straight through a large-format tile in one pass. It snapped. I paid for a replacement tile and learned the right way. Now I always tell people to cut about 1/8-inch deep on the first pass, then go back and deepen it. For a 10 mm tile, two or three passes is normal. A cordless angle grinder is not a wet saw; it needs patience.

When you get near the end of the cut, slow down. The last inch is where corners chip and tiles crack. Guide the blade, don't push it.

Step 5: Remove material from the back for a chip-free edge

If the tile has a very hard glaze, score the face lightly first, then make the main cut from the back. Yes, this takes longer. But for expensive large-format tile, a clean edge is worth the extra few minutes. I can't tell you how many callers say I wish I'd done that after seeing the face-chip.

Step 6: Know when to use the T1 grinding wheel

The Norton Abrasives grinding wheel T1 07660788281 has a job: cutting stainless steel, mild steel, screws, and thin metal. In March 2024, I sent a contractor out with both a diamond blade and a T1 wheel. He needed to cut large tiles around a metal door frame. The diamond blade handled the tile. The T1 handled the frame. Honestly, I'm not sure why some people expect one wheel to do both. My best guess is it's already on the grinder and they don't want to change it.

Safety notes and common mistakes

Keep the guard on. OSHA 29 CFR 1910.215 requires guards on abrasive wheel machinery for a reason. I've seen too many photos of grinders without guards and a confusingly clean shirt. A grinder is not a conversation piece.

Don't use a worn wheel. If the T1 or any cut-off wheel is shorter than the steel backing—or visibly cracked—throw it out. A new wheel costs less than a stitch.

If you're cutting tile dry, you're making silica dust. Use a water feed or a dust shroud, and wear a respirator rated for silica. A bandana is not a respirator.

And if you still need a router bits catalog, I'm sorry to disappoint. Norton Abrasives has no router bits. But if you need to cut large tile with a cordless angle grinder, you now have the right checklist. The best product for tile is a diamond blade; the Norton T1 07660788281 is the right product for metal. I'd rather tell you that now than have you burn through a wheel and a tile. No hidden fees, no upsell—just the right part.