Cupric Nitrate and Zinc Nitrate in solution are brushed on.
The storm arrived early and the heat dropped into the 90s, so I headed back out to the tarantulas. With this color session taken care of, next comes highlighting and toning, then a series of sealants.
The sculptures are evenly heated with a big torch, which activates the chemical reaction with the bronze- oxidizing the media.
The liquid boils off as it is applied.
Then the torch lifts off any remaining water, and layers of color begin to build up.
Flipped over to get the opposite side.
The color begins to saturate.
Roasting is not toasting. They will scorch easily, so the flame has to be used and not overused.
The color is saturated as the brush can make it.
I went with the brush over the air brush, because my chemicals are in short supply. Once the spider is saturated, water can be airbrushed on to intensify the color.
The airbrush is water and the left over patina- a 30/1 solution or so.
Heat and water are simultaneous, making for colored fire.
A little under the arm please…
Saturation is evened out.
The mottling of brushwork is toned back, and the color is brought up.
This is a smiling spider. You’ll have to trust me on that.
Now they need to cool down so I can go back in with steel wool and pull out details.