Abstract: Glass scoring machines for breaking glass along the lines of intricate patterns employing an intermittent feed dog glass advancing mechanism beneath the glass and a spring loaded glass scoring tool supported above the glass. Optionally includes a tapping device for periodically striking the scored glass to facilitate subsequent breaking along the scored line. May also be practiced as a sewing machine attachment for scoring or cutting glass or like material by selectively utilizing sewing machine mechanism without adversely affecting the normal operation of the sewing machine upon removal of the attachment.