Cutting a mirror with a glass cutter involves scoring the surface and then carefully breaking the glass along the score line.
Here's a simple guide on how to cut a mirror using a glass cutter, incorporating the technique of using the metal part on the back of the cutter for breaking:
Cutting glass, including mirrors, requires careful preparation and technique. Always prioritize safety by wearing protective eyewear and gloves.
1. Preparation is Key
Before you begin, gather your tools and prepare your workspace:
- Tools: Glass cutter, straight edge (like a ruler or guide), safety glasses, gloves, work surface covered with newspaper or a drop cloth, marking pen, and potentially a polishing stone for later.
- Clean Surface: Ensure the mirror surface is clean and free of dust or debris.
- Plan Your Cut: Mark the desired cut line on the mirror surface using your marking pen and straight edge.
2. Scoring the Mirror
The goal is to create a clean score line on the glass surface.
- Place the mirror on your prepared work surface.
- Align your straight edge precisely with the marked line.
- Hold the glass cutter vertically and firmly against the straight edge.
- Start the score from one edge and apply steady, even pressure as you move the cutter in a single, continuous pass to the opposite edge. You should hear a consistent "zipper" or "shhh" sound.
- Important: Only make one pass with the cutter. Multiple passes can damage the wheel and create a poor score, leading to an uneven break.
3. Breaking the Mirror
Once the score line is made, the mirror needs to be broken along this line. There are a couple of common methods:
- Edge Method: Position the scored line just over the edge of your workbench or place a dowel or rod directly under the score line. Apply firm, quick downward pressure on both sides of the score. The glass should snap cleanly along the score.
- Tapping Method: As demonstrated in the reference video, you can use the little metal part on the back of the cutter (this part right here, often shaped like a notch or ball) to assist the break. You can unclamp or move the mirror as needed. Lift up the mirror slightly. Then, tap on the back side of it directly underneath the score line. This tapping helps propagate the break along the score.
Choose the method that feels most comfortable and appropriate for the size and shape of your mirror piece.
4. Finishing (Optional)
The cut edge will be very sharp. You can use a polishing stone or sandpaper specifically designed for glass to dull the sharp edge and make it safer to handle.
By following these steps, you can successfully cut a mirror using a glass cutter. Remember to practice on scrap pieces if possible before attempting your final cut.
