Originally Posted by
pixpop
I just received some hot mirrors. They are about 30mm square, which is way too big for my needs. They are dichroic, maybe 2mm thick. I only need maybe 10mm square.
Any suggestions on how to cut them? If I could cut them into quarters that would probably do fine.
Also, I have many other ordinary front surface mirrors that are too big to use in my projects. Whenever I've tried to cut them, the results have not been pretty. These are mirrors salvaged from scanners, laser printers, etc.
I tried scoring with a regular glass cutter, and then snapping along the score, but I couldn't get them to break cleanly, and it's very difficult to do while protecting the coating.