WhatsApp Kiss
pinshape
For kicks let's start small - try 0.25mm apart. I suppose your heart doesn't require a gap at all, which means you'll need some sort of adhesive to hold things together. Not that I have anything to do with WhatsApp or its affiliates.
Download Model from pinshape
With this file you will be able to print WhatsApp Kiss with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on WhatsApp Kiss.