Three-dimensional printing on glass containers

A method of printing three-dimensional (3D) features on a glass container, the method comprising:

• applying a first layer of UV-curable material on a surface of the glass container around a circumference of the container;
• curing the first layer of UV-curable material by directing UV light toward the applied first layer of UV-curable material to produce a first cured material layer that forms at least a portion of a first 3D feature on the glass container;
• applying a second layer of UV-curable material on the surface of the glass container, spaced apart from the first 3D feature, around the circumference of the container;
• and
• curing the second layer of UV-curable material by directing UV light toward the applied second layer of UV-curable material to produce a second cured material layer that forms at least a portion of a second 3D feature on the glass container,
• wherein a portion of the glass container between the first and second 3D features has a circumference less than that of the first or second 3D features,
• wherein the applying of the first layer or the second layer of UV-curable material is based on assigned grayscale values, wherein the assigned grayscale values correspond to an amount of the UV-curable material and, thus, a height of the UV-curable material applied to the surface of the glass container.