This is one thing that the 3D printing world hasn't quite figured out. There's unlimited possibilities, but we haven't quite established conventions on how to

This is one thing that the 3D printing world hasn't quite figured out. There's unlimited possibilities, but we haven't quite established conventions on how to use it. Gridfinity is a big step, but there's still lots of stuff people are uncertain about. Printing threads works great if you do it right, but nobody seems to trust it will print well. A lot of designs have nonprinted elements, but other than heat set inserts nobody has converged on a common set of stuff like early electronics had with 555s and 2n2222s, and now Arduinos and random Amazon modules. It seems like using magnets and CA glue is kind of the rising star here, but there's lots of other techniques that don't seem to get explored because there's not much guidance yet. I spent about a week fussing with dovetail connections before I got something I was happy with( 40/130 deg depending on your reference per side, 4mm high, 5mm at the base of the male, 6.4 at the base of the female, 45 degree taper at the bottom of the male). Lots of companies have design languages for hardware, but I've never seen an equivalent for 3D printing aside from Gridfinity which is very special purpose.