01-20-2008, 01:14 PM
You can put Bondo down on bare metal. The chassis in question is, by electroubleshooter's own description, already rough, so adherence should not be a problem.
Two examples of this being done in automotive work:
http://www.purplesagetradingpost.com/sum...aint1.html
http://www.a2zautoforums.com/showthread.php?t=936
I've done a little bodywork before, and I will be the first to agree that Bondo is not good for deep, structural repairs (i.e. large holes or dents). Nevertheless, several years ago, I owned a 1974 Oldsmobile Custom Cruiser with rust around the wheel openings. Yes, I filled the holes with Bondo, using fiberglass sheets as a backing, then primed and painted. Surprisingly, it held up - and much better than I ever expected it to; the stuff was still adhering when the car's engine threw a rod a couple years later, and I sold the car for scrap.
A radio chassis is not going to be subjected to the extremes of an automobile; it will remain indoors in a controlled environment. Therefore, flaking and peeling should not be an issue, and either Bondo or the spot putty would be O.K. in this application.
Two examples of this being done in automotive work:
http://www.purplesagetradingpost.com/sum...aint1.html
http://www.a2zautoforums.com/showthread.php?t=936
I've done a little bodywork before, and I will be the first to agree that Bondo is not good for deep, structural repairs (i.e. large holes or dents). Nevertheless, several years ago, I owned a 1974 Oldsmobile Custom Cruiser with rust around the wheel openings. Yes, I filled the holes with Bondo, using fiberglass sheets as a backing, then primed and painted. Surprisingly, it held up - and much better than I ever expected it to; the stuff was still adhering when the car's engine threw a rod a couple years later, and I sold the car for scrap.
A radio chassis is not going to be subjected to the extremes of an automobile; it will remain indoors in a controlled environment. Therefore, flaking and peeling should not be an issue, and either Bondo or the spot putty would be O.K. in this application.
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Ron Ramirez
Ferdinand IN
