Core drilling automotive glass. (Universal Superabrasives Inc.)

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A novel study on core drilling automotive glass, administrationed by Universal
Superabrasives Inc., Romulus, Mich., has provided novel information
about the issue of diamond type, size, and concentration upon the life
and power consumption of metal-bonded impregnated core drills. experiments
were carried out upon 4 mm PPG green-tint automotive glass using a Toledo
Automated conceptions (T.A.C.) drilling machine run at a constant rpm
and feedrate - 3200 rpm at 14 mm/sec with plain water at 25 psi
as coolant.

Universal used a 13.2-mm-diameter Super-Cut standard F fastening drill
to make 1000