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How to Cut a Mirror: The Best Way to Cut Mirror Glass

Here is a simple overview for customizing a mirror's size:

  1. Clean the mirror.
  2. Place the mirror on a clean, flat surface.
  3. Measure the mirror.
  4. Score the mirror with a glass cutter.
  5. Snap the mirror according to the scored lines.
  6. Make any sharp edges smooth.

There are a variety of reasons w hy you may need to know how to cut a mirror at home. For example, you may need to split one mirror into two or put a mirror in a frame. When working with glass and mirrors, it’s always best to trust the professionals, especially if you are new to this type of project.

However, if you are eager to learn, we’ll teach you how to cut mirrors safely and correctly.

Before you begin, make sure you have these items on hand:

Tools Needed to Cut a Mirror

  • Mirror you intend to cut
  • Glass cutter
  • Work gloves
  • Safety glasses
  • Glass cleaner
  • Cutting oil
  • Measuring tool (e.g., framing square, ruler, tape measure)
  • Marking pencil
  • Straightedge
  • Square-headed pliers
  • Dowel
  • Sandpaper or sharpening stone

Step-by-Step: How to Cut a Mirror

Here are our step-by-step instructions for anyone wondering how can you cut a mirror:

Step 1. Clean the Area—Using your glass cleaner, clean the mirror on both sides. You will also want to make sure all tools are as clean as possible. Any dirt or residue can interfere with the cutting process.

Step 2. Set Up Your Workstation —Arrange your cleaned mirror and tools on a worktable or other similar, flat surface. You may want to cushion the worktable with fabric, newspaper or butcher paper to reduce potential bumps while cutting.

Step 3. Measure & Mark the Mirror —Using your measuring tool, measure and mark your mirror with your marking pencil.

Step 4. Time to Score—Wearing your goggles and gloves, use your cutting tool and a straightedge to score the mirror according to your measurements. Remember, too much pressure may cause you to break the mirror, and too little will not score the surface as desired. Score in a single motion and refrain from making multiple scores along the straightedge.

Step 5. Snap with Care—Once the scoring is complete, set the straightedge down and slide your dowel under the mirror, ensuring that it runs the full length of the score. Placing one hand on either side of the dowel, press down. The mirror should snap along the scored line.

Step 6. Avoid Fragments—Place a piece of cardboard or fabric in the jaws of the pliers. Carefully break off pieces of the mirror. This will help prevent fragments.

Step 7. Smooth it Out—Running sanding foam, sandpaper or a smoothing stone along the cut edges of the mirror will allow the edges to smooth, so they are safer to handle.

Step 8. Clean Up Your Area—Gather the newspaper or fabric you placed beneath the mirror from the corners, so any small and potentially hazardous pieces are contained inside.

Glass Doctor® and Custom Mirror Cutting

It is best to leave glass and mirror cutting to the professionals, e specially for larger pieces. Consider contacting someone who knows how to manage a project of this scale.

At Glass Doctor, we will safely and professionally cut your mirror to a standard or custom size, leaving you more time to focus on other projects in your home. If you have questions about how to cut a mirror, call us to schedule an appointment.

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Sources:

Integrated Publishing: http://constructionmanuals.tpub.com/14044/css/Measuring-and-Cutting-Glas...

Bob Vila: https://www.bobvila.com/articles/how-to-cut-mirror

More to Know About How to Cut Mirror Glass at Home

Cutting glass can be tricky but with the right tools and knowledge it’s possible! Working on your next custom mirror project? Read on to learn how to cut mirror without a mirror cutter, how to prevent breakage and more. All tips are from the professional glass cutters at Glass Doctor.

How can I cut a mirror without a mirror cutter?

If you’re learning how to cut a mirror, it’s recommended that you use a glass cutter. This tool is the most precise and safest option. Alternative tools to cutting mirrors are utility knives or other scoring tools, though the results can be less than perfect.

How can I prevent breaking the mirror glass while cutting?

When cutting a mirror, apply firm but gentle, even pressure while scoring to prevent breakage. Be careful not to press too hard. A single clean score works best. This is one of the most essential tips we can share when cutting mirror glass.

Can I cut a mirror into a custom shape or only straight lines?

Cutting a mirror in straight lines is the easiest and safest method for beginners. Cutting a mirror into curves or custom shapes requires advanced tools and skills. If you need a custom-shaped mirror, we recommend consulting the professionals at Glass Doctor.

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