I've been working with 3D printers for about five years now, everything from cheap Prusa i3 kits to professional printers from Mark Forged and Stratasys. I have tested my machines with most kinds of filaments and every slicer that's compatible. Quality of the print is more important to me than the profit margin, I'm always testing and tweaking them.
I ordered the Pi Zero case for the wrong hub. The Zero4U hub version 1.3 was not compatible with this design. But, I found use for it, anyway. Thanks your work was very good.