Thanks Will for the tool definitions, and Michael for putting the repo together.
FYI: I found out today that Fusion is generating a spurious M7 (turn on flood coolant) code, which my Shapeoko does not like. I have submitted a pull request to Michael’s repo with a corrected tool definition file that disables the coolant settings. Thought I’d mention it here as this thread is one of the first google results for “fusion 360 carbide tool definition”. Thanks all!
BTW: Here is a link to the forked repo with the fix, if you are seeing this before the pull request is approved: Forked Repo with tool coolant removed