rblongboarder
Well-Known Member
An E3 restoration on this site introduced me to something new.. an epoxy primer technique for rust prevention.
I thought it would be useful to compare rust prevention techniques:
Technique 1: Galvanization
I don't know exactly what year galvanization was introduced, but there are many classic cars which lack it: Mustangs, 240z, 2002, E3, E9... I seem to recall galvanization was introduced about 1975 or 1976... when the early E24's, E21's and E12's were introduced.
Steel is sandblasted and then dipped in molten zinc, producing a protective layer.
Technique 2: Chemical Dip.
This process is similar to re-chroming. Metal items are sandblasted, polished and de-greased. Sometimes there is a minor acid-etch step.
Finally the metal item is dipped in a chemical bath, which reacts with the steel, producing a thin layer that protects. Due to environmental regulations in California, Nevada and Arizona, a lot of this industry has transitioned to Utah.
Technique 3: Novol Epoxy Primer System.
I was not familiar with this technique until I started a discussion regarding this E3 restoration:
The process seems similar to chemical dip in terms of preparation.
My curiosity: how well does the epoxy bind to bare metal ? What happens when metal is dented?
Perhaps others on the site can contribute knowledge, and potential companies that do this sort of work in the USA.
I thought it would be useful to compare rust prevention techniques:
Technique 1: Galvanization
I don't know exactly what year galvanization was introduced, but there are many classic cars which lack it: Mustangs, 240z, 2002, E3, E9... I seem to recall galvanization was introduced about 1975 or 1976... when the early E24's, E21's and E12's were introduced.
Steel is sandblasted and then dipped in molten zinc, producing a protective layer.
Technique 2: Chemical Dip.
This process is similar to re-chroming. Metal items are sandblasted, polished and de-greased. Sometimes there is a minor acid-etch step.
Finally the metal item is dipped in a chemical bath, which reacts with the steel, producing a thin layer that protects. Due to environmental regulations in California, Nevada and Arizona, a lot of this industry has transitioned to Utah.
Technique 3: Novol Epoxy Primer System.
I was not familiar with this technique until I started a discussion regarding this E3 restoration:
The process seems similar to chemical dip in terms of preparation.
My curiosity: how well does the epoxy bind to bare metal ? What happens when metal is dented?
Perhaps others on the site can contribute knowledge, and potential companies that do this sort of work in the USA.