3 Simple Ways To Cut A Tempered Glass Screen Protector

If you’re cutting the screen protector to put it on something other than a phone, simply measure the dimensions and draw them on the screen protector.

Add a small notch at the bottom by hand if you have a home button. This notch will be a lot harder to cut out, though.

If you’re cutting the glass underwater to reduce the amount of stress on the glass and minimize the odds that it shatters, you probably don’t need to protect your lungs. If you’re going to trim the screen protector down with a diamond file though, you definitely need a dust mask or respirator to avoid inhaling the dust from the glass.

Don’t take your gloves off to do this. It may feel weird wearing gloves in water, but it’s a key part of staying safe!

It is thought that the water makes it easier to cut the glass by providing a cushion for the glass as you’re cutting it, which it reduces its overall strength and makes it easier to cut. Some people even compare the feeling of cutting glass underwater to cutting cardboard![6] X Research source

If you have a notch for your home button, use the portion of the blades that are closest to the handle, not the tips.

A diamond file is basically a long piece of metal with a textured edge use for sanding hard materials. Diamond files have different grits, just like sandpaper. Use the finest grit you possibly can to do this. A dremel tool is a small, pen-like power tool with a tip that spins. It’s used to trim materials down without cutting. If you use a dremel tool, only submerge the rotating tip in the water to avoid shorting the tool or electrocuting yourself.

You have to be very delicate while you’re doing this. If you apply too much pressure, the screen protector may shatter. You could theoretically use a dremel instead of a diamond file for this, but it will take a lot longer since you can only work in 1⁄2 inch (1. 3 cm) sections with the small dremel bit. Your line likely won’t be as clean either.

You don’t need to sand the edges down since the diamond file is basically doing this for you as you remove the glass.