Quote:
Originally posted by RickM
Typical media blasting wont take off undercoating because the rubbery make-up of the coating absorbs the impact of the media.
There may be some high end equipment that is capable of this.
Are you thinking of the Zinc coating on the metal?
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What do you classify as "typical"? Are you referring to the home type systems that are sold through places like Eastwood? Or the industrial strenght equipment?
Reason I ask is because I went on a tour of my local blasting/powder shop (
http://www.ascoweb.com) and they claimed that their media blasters can run at such high pressures that they take off everything....so high that they can damage or bend the metal if they're not careful. Perhaps I should ask them if they can take off undercoating.....They do have media and pressures that are more delicate, especially for galvanized surfaces.
I would love to zinc coat the metal, however I believe that's exteremely expensive? What about a rust inhibiting powder coat that has some sort of zinc chromate?
My local blasting/powder shop can take the chassis directly from the media blaster to the powdercoating area within the hour. They routinely do government contracts which require rust inhibiting primers that withstand ocean/salt conditions so I would imagine that they could do a similar coating for an early 911.