Tons of 2d printer challenges.

The ink jet head at a resolution of <50um (as opposed to 3d printing resolution of usually >200um)

Combined with printing on many different surfaces and such: cardstock, printing paper, glossy, weights, stickers, etc...

This project "cheated" (I mean that not in a negative way, tons of open source hardware projects use proprietary components, my own does too for now) by using a proprietary ready-mades printhead, which saves the most cost and effort of the whole machine, and is the component that causes the most issues, generally.

I definitely want to try this out too.