How to break a mirror into pieces for a mosaic. This technique covers the basics, you can practice the technique to expand the range of shapes you can create for making mosaic pieces.
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Step 1: Score the Glass Mirror
- Draw only once, avoid sawing motions.
- If your wheel sticks, then add a drop of cutting oil.
Step 2: Preparing to Cut
Align scored glass along top of broom handle.
Cover it carefully with cardboard so that the mirror doesn't slide off the score mark. This is the only tricky part, from here on you have to know by feel if you are on or off the score mark.
Then cover with your wood or other firm board.
Step 3: Cutting
Apply pressure evenly along the score mark,
and push/lean towards the small side, it should snap right off.
If it doesn't then check the alignment of the score mark along the broom handle. Then try again.