4:48 pm
April 18, 2011
A customer has inquired about a forged stainless handrail but they want it to have a bronze look to it. My inclination is to steer them toward a silica bronze rail or powder coat over steel rail. I hate working with stainless plus I'm concerned about a bronze looking patina over stainless simply scraping/wearing/abraiding away and then me getting a nasty call back. Any thoughts?Bob.
6:59 pm
NWBA Member
April 22, 2010
You cant really "patina" stainless in the real definition of the word.
However, a friend of mine, Heath Satow, has developed a process where he treats SS with a iron/acid mix that leaves a nice, permanent, golden finish.
He pretty much had to invent it by trial and error, but I think it involves dilute acid, with nails stewing in it, sprayed over heated, but far from red hot, Stainless.
Check out his Denver zoo animals at his website-
http://www.publicsculpture.com.....lio02.html
Possible, not easy.
In addition, fire patinas on stainless are pretty permanent. They tend to fade a bit in the weather, from their original brightness, but they stay, rust free and colored, for as long as anybody has been able to observe, so far.
Giuseppe has done a lot of this-
http://metalgarden.ca/metalgar.....etail.html
check out his whole site, there are several examples of heat patinas on stainless.
But if they want bronze, they just get bronze.
Powder coat, long term, is a big can of worms. It WILL peel, its just a matter of when. In the Bay Area, near salt air, maybe two years. In Santa Fe, you might get ten.
But sooner or later, the whole thing has to be removed, baked, sandblasted, and repainted.
I sure dont want that on my conscience.
7:21 pm
March 18, 2010
In some technical circles stainless steel is known as CRES - "corrosion resistant steel". Bronze is the original corrosion resistant material. Plus it's much more friendly to work with.
“There are painters who transform the sun into a yellow spot,
but then there are others who, with the help of their art and their intelligence,
transform a yellow spot into the sun.” ~ Pablo Picasso ~
9:09 pm
April 18, 2011
Thanks for the input. Just sent off email to client strongly empasizing the virtues of bronze for handrail project. This year will be the year where I stop doing essentially free R&D work for clients searching out ways to duplicate something they saw in a picture or something a designer designed that could only be made profitably if in my shop if I made them in large quantities. My new business model for customers will be " sure,you need left handed widgets with a wombat oil finish, OK, cut me a check up front to initiate the R&D process and I will be happy to start.
12:22 pm
August 14, 2010
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