Sunday, 24 February 2013

#397 At the foundry: Patina, the power of color, con't . . .

Please start this series about patina with post #391, Feb. 13

Unlike cupric nitrate and ferric nitrate, which requires the bronze to be heated before application . . .
liver of sulfur, which produces black and brown, is applied to the sculpture cold.  

Below, is the sculpture Ovis Aries.  The top image shows the cold application of liver of sulfur.  
The lower image shows the sculpture after it has been heated with a propane torch and cupric nitrate 
has been sizzled onto the bronze.  Note the blue color . . . if ferric nitrate had followed the cupric application, 
the color would have changed to a warmer, yellow green.  

Ovis Aries
16"H 13"W 5"D
Copyright Sandy Scott

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