Beholder lithophane
thingiverse
Using curved lithophane maker at https://lithophanemaker.com/Curved%20Lithophane.html with the following options set: Resolution of lithophane image is 0.3 pixels per inch, height of lithophane is 125 inches, angle of curve is 120 degrees, width and height of frame surrounding lithophane are both 7 inches, overhang angle where frame meets lithophane is 35 degrees, maximum thickness of material used for lithophane is 3.6 millimeters, minimum thickness is 0.55 millimeters, and picture spacing within lithophane image is 10 pixels.
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