A quick Heart Shaped Box, the are intended to be printed on Vase Mode. there is extra tolerance built into the model to ensure a nice fit. I included three different sizes but feel free to mess around with the scales in your slicer for a custom size.
Update: apparently i originally uploaded the wrong files for the bases, the boxes didn't stay together at all. I have corrected this and it should leave 0.5 mm of tolerance for the boxes to fit together.
The author marked this model as their own original creation.