I also find that line hilarious, but maybe it's intended as in "size adjustable down to the millimeter". CAD programs are generally unitless. You can design a

I also find that line hilarious, but maybe it's intended as in "size adjustable down to the millimeter". CAD programs are generally unitless. You can design a box with OpenSCAD "down to a micrometer" if you want. Designing a joint that works well also will poorly 3d-printed parts is usually what matters, but it's not like we're lacking customizable solutions: https://www.printables.com/model/757297 https://www.printables.com/model/757297 (not detracting from the website.. just commenting on the headline)