This is just delightful:
EDIT: There’s also a video:
which addresses many of my concerns.
Further edit:
It includes specific support for:
- facing
- pockets
- rectangular
- circular
- drilling
- slots
with the ability to do:
- grid pattern
- circular array
- repeat
as well as entry strategies for
- helix
- zig-zag
Of especial note is that completed designs may be shared encoded into a URL.