This is my fully 3d-printable carburetor prototype.
It works absolutley great, as you can see in my video about it (https://youtu.be/1k920fg2RAY).
It's 12mm in diameter, which is good for a powerful 50cc two stroke or a 4 stroke up to 80cc.
Modify the jet so you're getting a 0,6mm hole for the main jet and a 0,3mm hole for the pilot jet.
Print rather slow, (40mm/s), because the parts are very small.
Print the fuel chamber quite hot (210°C) to make sure that the layers are tight to gasoline.
Please print the fuel chamber at 210°C to ensure it's tight.
The rest can be printed cooler.