A Note on Breaking Glass Knives

In cutting thin sections of dense tissue such as bone, much depends on the integrity of the glass knife edge. The method of breaking the glass by first scoring it into strips has certain limitations. These strips have irregular edges be-T]~xT-Fm. 1. Plan of piece of plate glass. cause they break along the strain lines introduced by the glass cutter and it follows that the cutting edge of the knife will also be irregular. The strips can be made without scoring the glass along the line which will form the clearance facet. A clean break is still a matter of chance as plate glass has a very non