Oh man, i found this nice video today and i think it’s better to change the “Solder Dispenser” code to this solution. It’s a kind of 3d print of solder paste. But i don’t know how can i calculate the correct flow of solder paste? I’ll check some g-code from 3d printer and try some experiments in the next time 
Gotta be a pretty special formula of paste
It’s a low temp paste from what I heard.
A guy at the openpnp forum sad: “The project lead is a nano fluids expert, so it’s quite possible she’s developed something to solve the inherent problems of dispensing paste from a plunger. They had to do the same with their conductive ink.”
https://groups.google.com/forum/#!topic/openpnp/8VujUUd00w0
si usa una tinta conductiva , ya no usan taladro ni químicos para hacer la baquelita