An easy-to-print lithophane lamp for E27 lamp holder with 28mm screw, like this:

https://www.amazon.it/Arditi-cablaggio-bianco-provvisto-portalampada/dp/B07SNFQBMY/ref=sr_1_35?adgrpid=59462718624&gclid=Cj0KCQiAzMGNBhCyARIsANpUkzNxIrDrF2FClk_bawRE_6sTcOJhU4DhyXXh0uN20O-EPssPAsT_cikaAuByEALw_wcB&hvadid=255131393191&hvdev=c&hvlocphy=1008372&hvnetw=g&hvqmt=e&hvrand=16351859705738590478&hvtargid=kwd-326104096701&hydadcr=25735_1828687&keywords=e27+con+interruttore&qid=1638983832&sr=8-35

Lamp is made in two pieces with dovetail joint, no need of glue or screw to assemble, the lithophane is an example, the lamp can be used with any 200mm 100° curved lithophane with 5mm border (the one in the example is made with 3mm thickness 0,6mm thinnest layer). Before to print the final parts I recommend to print support_litho_test and the base part of the lithophane to verify the correct couplings of the parts.

The base in the model has two hearts, on request is available also with own initials, as well as the lithophane can be made with any picture.