On Wed, 28 Jan 2004 01:32:55 GMT, Orval Fairbairn
wrote:

In article ,
Ed Wischmeyer wrote:

Folks, the question is not about alternatives to alodyne, or about
primers -- it is how to alodyne large sheets without having huge
quantities of chemical!!

Unfortunately, IMHO, there is no alternative. As you know, Ed, I had an
alodyne tank setup in CA, which I made up, using a lye solution for etch
and a companion tank for the alodyne.

I got the lye from the supermarket and the alodyne powder from a plater.
For best reaults, the lye should be at 120 dg f. Etch for 5 minutes,
wash, alodyne for 10 min., wash.

Using lye ( sodium hydroxide ) for an etch is a disasterous choice.
The treatment you describe will more than remove all of the alclad
from the sheet and leave you worse off than when you started.

O-ring