Q&A for How to Cut Mirror

Step 3 says: "Place your wheel cutter vertically, or straight up and down, on the reflective side of the mirror." So, this means mirror side up.

Use a glass scoring tool that is designed to cut curved lines.

It depends on the size and thickness of the glass. There are simplistic methods you can use for small pieces of glass, like using string, wire and even scissors. For very large and thick pieces of glass, you may need a blowtorch.

No, safety glass cannot be cut. It's made differently and will shatter into cubes.

Yes, but only with help and the proper tools. I don't recommend this though as it's much more difficult.

No. Remove the mirror from the wall first before trying to cut it.

You can't. It has to be on a flat surface. It's not safe to cut a mirror on the wall.

No. Place the mirror on the reflective side to cut it. Place your wheel cutter vertically.

If you have a sentimental attachment to it: remove the glass and sheetrock as one piece, soak in a basin for a few days, then scrape off the sheetrock. Find a solvent that will dissolve mirror adhesive without damaging mirror reflective coating or etch glass, soak in the solvent basin until the glue is easily removed. Then cut the mirror as directed. If there's no sentimental attachment: buy a custom cut mirror.

If it is more than 3/8th of an inch, it is too thick to cut without a blowtorch.

You use a hole saw coated with lanolin. Dip the entire tip of the saw in lanolin and coat mirror where hole will be. Let saw do the work, reapplying lanolin as it wears off.

Other “light oil” products being used that are very similar include sewing machine oil, bicycle chain oil, lamp oil and baby oil. All this might explain why people who prefer kerosene will also suggest that “cutting oil” is too viscous and does not wick properly in oil-filled cutters.