On Apr 9, 4:13 pm, "Bill" wrote:
What would be a safe way to drill a hole in the lens of sunglasses without
shattering the lens?
The hole can be 1/4 or 1/2 inch in diameter.
Maybe a hot iron?
Maybe water cooled drill?
Maybe a drop of acid?

Bill W.

Assuming plastic lenses:
http://www.plasticsmag.com/features....sue=Sep/Oct-01