Heart Gear Center for Slic3r
thingiverse
For whatever reason, slic3r doesn't like the geometry in the original heart gear center. Here's a fixed version.
Download Model from thingiverse
With this file you will be able to print Heart Gear Center for Slic3r 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 Heart Gear Center for Slic3r.