The file 'Three Heart Gears ( FITS 120×120 BUILD PLATE / SEPARATED) 3D Printer Model' is (stl) file type, size is 431.1KB.
These use my a snap pin library, so they print more reliably and are much easier to assemble.
Print parts 1 then 2 then 3 and just snap fit together, (optionally add lubricant)
Assembly instructions can be found in this video: http://youtu.be/O-qwmRwOpFQ
I always recommend greasing the pins to keep it turning smoothly without squeaking. I use white lithium grease, but anything that doesn't melt plastic should work.
HeartGearPart1.stl | 339.0KB | |
HeartGearPart2.stl | 445.4KB | |
HeartGearPart3.stl | 283.5KB |