Quote:
|
Originally Posted by jaydee
Those fins and tubes are covered in solder. Make sure it isn't the grey solder you are scratching. Looks like brass fins from the first pick. Also note many people seem to think brass and copper are the same thing... Even in the fab shop I work at the guys are always calling the copper plate we use brass...  |
I scratched a fin untill I came trough it and I didn't get much wiser. It seems to me that it's the same material all the way. And I scratched one of the channels as much as I dared witout finding any new material.