While attending the Craftsman Structure Show this past week, I learned that
Radio Shack no longer stocks Etchant. For those unfamiliar with Etchant, model
builders have used it for quickly and very effectively weathering corrugated
aluminum sheet stock for roofs and siding. The side-effect of putting aluminum
sheet stock into Etchant, known chemically as ferric chloride, is the release
of a toxic and odious gas. Also, the solution that remains post-reaction is
toxic and may not legally be poured down a sink drain. While Radio Shack no
longer stocks Etchant, ferric chloride, normally used for etching circuit
boards, is still readily available at such locations as
http://www.mgchemicals.com/products/415.html
So, all is not lost. In the past, Turner Model Works has included
instructions for this process within their packets of corrugated aluminum sheet
stock.
I have no personal interest in MG Chemicals nor Turner Model Works so this
is not an endorsement of either.
Gerry Evans
In Flagstaff
[Non-text portions of this message have been removed]
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