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Cutting Bathroom Tiles with Montolit’s CGX115 Angle Grinder Blade

Cutting bathroom tiles is a lot easier with an angle grinder…even more so when you have the right blade.

Today we take a look at Montolit’s new CGX115 blade made with DNA technology.

The DNA stands for Diamond Network Arrangement. Basically this means the CGX115 has layers of diamond in the blade.

This equates to smoother cuts and a blade that lasts a long LONG time.

Hey, who doesn’t love it when tools last longer than cars!! Okay, that’s maybe a stretch but you get the point. We’re also going to share 6 tips for using an angle grinder when cutting tiles. Let’s dive in.


Tip #1: Check RPM Ratings

I don’t know about you but that last thing I want to happen is for an angle grinder blade to blow up in my face.

To prevent this from happening the RPM rating on the blade should be higher than the angle grinder RPM rating.

For example, the CGX115 has an RPM rating of 13,300.

The FEIN WSG7-115 angle grinder I’m using in today’s tutorial has an RPM rating of 12,000.

WSG7 Angle Grinder

So we’re in good shape.

Tip #2: Correctly Install Blade

Every angle grinder has a directional arrow indicating the direction the blade will spin.

Angle Grinder Arrow

Angle grinder blades have a similar arrow. You can see it on the CGX115.

Angle Grinder Blade Arrow

Ensure this arrows line up with each other and the blade is spinning in the correct direction.

Tip #3: Get the Blade to Full Speed

Angle grinders operate at high speeds for a reason. In order for them to cut properly, especially when cutting tiles, they should be at full speed.

Angle Grinder at Full Speed

Otherwise the blade will chip the tile.

Chip Tile

Which brings us to Tip #4.

Tip #4: Break In New Blades

The CGX115 is an awesome angle grinder blade.

But it has a break in period, meaning you should make several cuts on scrap pieces of tile or even cinderblock.

Scrap Tile

Many thanks to Ken Balin who gave this tip to me over on our private tile group.

If you’re looking for a great contractor in the New Jersey area contact Ken. I’ve seen his work and it’s awesome. He installs bathrooms and flooring.

Once the CGX115 gets past the break in period you’ll have smooth cuts galore.

Tip #5: Safety Gear

There’s nothing worse for your lungs (besides smoking several packs of cigarettes or inhaling coal dust or you get the point) than silica.

Wear the appropriate safety gear when cutting and setting tile.

The CGX115 is approved for dry use, so you don’t need water to cut the tiles. This is great, but also produces a lot of dust.

Dust from Angle Grinder

There are phenomenal respirators for silica protection and awesome ear buds that aren’t too intrusive.

I recommend them to my friends who want to keep their hearing and don’t want to be on oxygen at 50 years old.

Also, it’s not a bad idea to wear eye protection. Getting a sliver of tile in the eye is not fun.

Tip #6: Buy for the Long Term

There’s nothing like a tool that lasts a long time.

Montolit’s CGX115 is going to do that for you because of the layers of diamond.

Montolit's CGX115

It cuts

  • Porcelain stoneware
  • Porcelain stoneware slim slabs
  • Single-fired ceramic tiles, terracotta
  • Granite tiles and natural stone
  • Double fired glazed tile, marble tile

What’s Next

An angle grinder equipped with the right blade makes cutting tiles a lot easier.

If you’re doing a bathroom remodel and need help, join one of our online courses – they’ll make your bathroom renovation much easier!

Let me know if you have any questions and I’ll do my best to help.



Montolit CGX115 Blade

  1. David Betts says:

    Thanks for the well done demo. Very helpful tips.
    I like that you emphasize safety during your videos.
    The beard gives you an intellectual look; as if the video is being made by a scholar.

    1. Thanks David, the beard has pros and cons, lol. Safety is very important when using an angle grinder to cut tiles. The wheel guard is something I should have mentioned as well. It’ll keep most of the tile shards away from your face. We’re going to do a video on safety gear soon.

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