Here are some pictures of my latest printer design. It's not so different from the last design. The only changes are:

- New printhead which has a vacuum duct around the nozzles to suck in the excess ink.

- New driver electronics for switching the piezo discs - four IRFP460 that switch around 170VDC.

- Less 3D printed parts and cleaner look, because I placed the electronics in two boxes.

That's about it.

I tested it out and it works reliable even after not being in use for a day or two. After a short priming it is ejecting droplets again.

I'm currently using 0.2mm nozzles and the ejected droplets are quite large. Maybe I can change that by changing the switching time or by using even smaller nozzles.

But at least it's working now and should be usable for some test prints.

I uploaded the .stl files for it and will write building instructions for it as soon as possible.