Q&A for How to Cut a Mirror Without a Glass Cutter

If you don't have a glass cutter, there are other items you can use to cut a mirro. You can use a carbide or diamond-tipped scribe to make precise cuts on the mirror. For a cheaper option, you can use a steel file with sharp, angled edges.

You can use a glass cutter tool that's made for the job, or you can use an alternative tool to cut a piece of glass. Use a carbide or diamond-tipped scribe to score the glass so you can snap it and create a clean edge. For a cheaper, but potentially sloppier edge, you can use an ordinary steel file. Scratch the surface of the glass to carve a scoring line into it. Then, slide a dowel beneath the glass along the length of the score and press down on the glass to cut it.

Yes, you can use a utility knife to score glass so you can snap it along the cut and break it evenly. Use a straight edge or a ruler to guide your utility knife and score a straight line into the surface of the glass. You may need to make a few passes to cut deep enough. Then, you can place a dowel beneath the glass, under the scoring, and press down on both sides of the line to snap it.

Any sort of sturdy, cylindrical rod of sufficient length should work just fine.