Arts and Crafts

Chemistry

# Why must glass edges be fire polished?

###### Wiki User

###### July 02, 2013 1:42PM

Those edges can be sharp as knives or razor blades and will be hazardous until they are fire polished. Fire polishing melts the edge enough so that it forms a smooth and rounded surface.

## Related Questions

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###### Asked in Math and Arithmetic, Geometry

### Cylinder faces edges vertices?

Euler's definition do not apply to curved solids. faces must be
polygons; they cannot be circles. using the conventional
definitions of faces, edges and vertices,
This question causes frustration for teachers and students.
Euler's definitions of edges, faces and vertices only apply to
polyhedra. Faces must be polygons, meaning comprised of all
straight sides, edges must be straight, and vertices must arise
from the meeting of straight edges. As such, a cylinder has no
faces, no edges and no vertices, using the definitions as they
apply to polyhedra. You need to create a different set of
definitions and understandings to apply to solids with curved
surfaces.