Summary

Something made for the upcoming month of love :P
Based on the accuracy of your printer, you should size-up the model (made it very small as its prime use is for jewelry noble metal printing on shapeways)

https://www.shapeways.com/product/SXE56YVZ6/heart-knot-amulet

PS sorry for the large files, the number 1 file took so long that i will have to upload it another time :(