Glass cutter

Glass cutter, showing hardened steel cutting wheel (far left), notches for snapping, and ball (on end of handle) for tapping

A glass cutter is a tool used to make a shallow score in one surface of a piece of glass (normally a flat one) that is to be broken in two pieces, for example to fit a window. The scoring makes a split in the surface of the glass which encourages the glass to break along the score.[1] This is not to be confused with the tools used to make cut glass objects.

Regular, annealed glass can be broken apart this way but not tempered glass as the latter tends to shatter rather than breaking cleanly into two pieces.[2]

  1. ^ McGowan, Christopher (1999-02-28). A Practical Guide to Vertebrate Mechanics. Cambridge University Press. ISBN 9780521576734.
  2. ^ Architects, American Institute of; Hedges, Keith E. (2017-03-16). Architectural Graphic Standards. John Wiley & Sons. ISBN 9781119312734.