"Milky" head light lenses:

[Rex Schimmer]

I have a set of what my neighbor, who gave them to me, are mid 20s head lights supposedly from an Auburn, that I am planning to put on my lakes roadster. They are almost 12 inches in diameter and will look really neat, BUT the original lenses are "milky" they have become less than clear over the years. Is this a surface defect that can be polished out or is it something that goes completely through the glass and I just have to live with it?

Any help will be appericated.


Rex

[blown240]

I had a Volvo 240 that did that.  First they needed to be cleaned with something that will get dont in the fine scratches and clean out any dirt.  Then I used this stuff called Bright Boy to polish them.  

The Volvo lenses were plastic though; I dont know if that matters.

[Bruce Dorsi]

Old glass often begins to devitrify .  

This is an internal (chemical?) change which causes glass to turn "foggy" or "milky."   .....Devitrification can be accelerated by age, exposure, contaminants, or high temps.

As far as I know, the process is non-reversible, but a 'net search may prove me wrong.

[EMSjunkie]

devitrify .  

 Devitrification can be accelerated by age, exposure, contaminants  

As far as I know, the process is non-reversible, but a 'net search may prove me wrong.

So thats whats wrong with Enjenjo.  



Vance