Rusty windshield theories

[C M Smith <cmsmith@domain.elided>]

I attribute rust occurring on the windshield frame to clumsy windshield 
repairs. With bonded in windshields it is necessary to cut the old 
windshield bond (with a "cheese" wire usually) and if this is done 
inexpertly the resulting surface of old bonding material has to be levelled 
with hand tools. Inexpert wire cutting is followed by equally inexpert hand 
shaping which scratches the paint finish, leading to rust.

The other common cause of paint damage in the windshield frame is stone 
chipping at highway speeds. These chips often go unnoticed for many years, 
another source of rust spotting.
Michael Smith
Calgary, Alberta
Canada
91 Alfa 164L, White, original owner

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