Hidden Heart (requires transparent filament and external light to view)

thingiverse

A simple experiment with Tinkercad - object in object, result is shell in shell. Have a light behind the transparent wall to see the inner object. This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/0pCCiTW4Np6 Print Settings Printer: Wanhao Duplicator I3 Rafts: No Supports: No Notes: Transparent filament required, obviously. How I Designed This Made entirely in Tinkercad, using the Heart from MicrosoftStore Tinkercad has an interesting feature that it only saves the surface - for example, if you put a hollow heart inside a solid cube, the result will be a hollow cube with a heart-shaped shell inside it. Customizing (using Tinkercad) I've made the Tinkercad project publicly available, so you should be able to copy and modify it. The block is not grouped, so be careful when moving it. The hollow block next to it is for finetuning - combine the hollow with a part of the solid cube (select each, do not drag to select) to see the inside of the solid cube (i.e. the hollow heart and the text below it).