Screen printing is a better choice for printing onto PCB surfaces. Copprint (an Israeli startup) has copper inks specificallý for FR4. Soldering is easier there

Screen printing is a better choice for printing onto PCB surfaces. Copprint (an Israeli startup) has copper inks specificallý for FR4. Soldering is easier there... https://www.youtube.com/watch?v=1up5a7z6tjE https://www.youtube.com/watch?v=1up5a7z6tjE Another option is this: https://www.youtube.com/watch?v=OpObgG522sY https://www.youtube.com/watch?v=OpObgG522sY