Printed on an Ultimaker 3 Extended in PLA at .1mm vertical resolution. I printed "Base.stl" in Red PLA at 50% infill, and "Heart.stl" in transparent PLA at 100% infill. Printing "Heart.stl" at less than 100% is fine, you'll see the infill pattern though. Designed to contain a tea lamp measuring a maximum 22mm height, 38 mm diameter. After printing "Heart.stl", remove the center support tower by snapping it off. Snap off the "flame" diffusor from the tea lamp, then press it into "Base.stl". Press "Heart.stl" into "Base.stl".