yeah - there's even some ocaml code for generating 'custom fit' dactyls. Problem in, the shells take hours to print and it a very finicky 'fitting' process. I stopped after like 3 'test' dactyl shells.
Some subreddits that I know: r/ErgoMechKeyboards r/MechanicalKeyboards r/olkb
Also I know about these on Discord: SliceMK KBDFans BastardKB SplitKB QMK
Oh! looks like there's a OpenSCAD parametric dactyl now (1) I think this was the clojure one I was playing with before: (2)
[1] https://ohkeycaps.com/products/built-to-order-dactyl-manufor...