The brown copper pieces are actually an arrangement of water collectors that are connected by " gutters " ending up at a wash sink. I made the sink as well but photos are buried in a box somewhere . There are some external solder joints but the lighting in the photo and crap scanner make them almost invisible.
The silver pieces are actually lead coated copper , not galvanized. They are non-functional decorations that fit over some downspouts for some embassy ( can't remember ) somewhere in N.W. Washington , DC.
I did the pattern layouts and forming and my partner on these jobs did the final assembly. He's an " Artisan " type guy who is just great with metal...it was a blast working with him.
I haven't touched any flat metal for a long time...this stuff was done in the late 1980's. Plasma arc cutting machines and getting married put an end to my sheet metal shop career , lol. But man I really did enjoy layout and fabrication of the more complicated items.
The sheet metal 'artisan' is becoming an endangered species.
I'm sure plasma cutters, computer programs, etc., are great things, but some of us still like to do things the 'old fashioned' way.
But....there is no money in it.
Awe heck...thanks for the compliments. I'm just a guy who read some books . The real credit goes to my partner I think...though he may say the same about me.
The fluted end of the gutter pieces was developed similar to a round elbow ( parallel line development ) from a plan view and th curve plotted against the stretch out of the true length. the top involved some " triangulation " true length.
The water supply pieces were " radial line development " and breaking half way...except for one which fits on the corner.
All of this stuff was drafted on white paper before I ever went to the metal ( we had to submit a cardboard full scale model of the gutter pieces ). If you want to do this type of stuff ...get a cheap drafting table and drawing tools to start. I had a few neat old machines to work with (an elbow edge lock and some others ). I never had the Niagra stake table that I dreamed of...and other obsolete and wonderful stuff ( notice the home made stake in one photo , lol ).
And if I can help in any way , p.m. me or whatever...I'll share anything I know about this stuff. I ran across a couple of duct pics from the past and scanned them in....they seemed important to me at one time I guess , lol.