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Making a bronze globe for Denali Park Visitors Center

Formed sections

Raising a petal section

Sinking a petal section

Assembling the sphere

Mapping and truing up the shape

Plotting the data.

Oops, I shoot so little video, I forgot that I had to stay in landscape mode.
The video at the following link was shot portrait, so it is 90degrees off. (twist your head)
It shows the globe being rotated through the etchant bath.

link to Acid Etch - 288K mpg movie