The print does not need supports. It fits small LED lamps like this one: https://www.amazon.de/dp/B01MCYBMH3?ref=ppx_yo2ov_dt_b_product_details&th=1

The base just needs to be pressed into the legs, maybe you need to add some glue. It fits Lithophanes with 120mm diameter.

I generated the lithophane using https://itslitho.com/ with 118mm Diameter min. thickness of 0.4mm and max thickness of 2.0mm.