To protect against glass scratches, position a piece of cardboard underneath the glass on your work surface prior to cutting.

and other glass table ware, in common use, is made in this manner. The finer and most costly articles of glass ware are finished by a process called cutting, which is, however, really a grinding ...

The cutting of glass with steel has been demonstrated to be possible provided its point is ground into the form of the common glaziers' diamond. But while hard steel of this form will cut glass ...