You need

6 Connectors
2 Hearts
1 Long Connector
1 Bottom
1 Middle
1 Top
The Tool is optional but helps.
There are also “All” presupported and unsupported. They have everything you need for a full assembly.

Print Settings

Standard settings but this model needs supports. I provided unsupported and presupported files.
If you are using the presupported stls they need to be disconnected before printing. Otherwise the slicer assumes bot parts should be the same object and merges them. The 3mf is already disconnected.
Presupported works better if you get it to work.

Assembly

I made an Assembly Video: Watch the video

Technical Data

One layer shift Takes around 100g of Filament and 4h to print.