What is an excellent thing to waste your Saturday on? Trying to modify an HP 550C inkjet printer so that it prints human tissue cells instead of black & color.
You'll need: a printer, empty/sterilized ink cartridges, modified print heads, cells and media, experience in modifying hardware (the printer), software (the printer driver), and wetware (the cells), and a desire to waste many hours on something that will probably not work. As you are already wasting time by being here, I give you little room for excuses.
If I actually get this to work I will post further details. In the meantime, here are further resources if you are interested. Hopefully, you have something fun to do this weekend, like a normal human being, but if not, enjoy... [Organ Printing] [Cell and Organ Printing 1] [Cell and Organ Printing 2]