I've been in comm about this as well. It's a large gear that's 8 or 9 inches across and about an inch thick (guesstimates from my slicer visualization). Solid is a full day's print, and 10% fill is 11 hours at 30mm speed.
I'm going to try it as a challenge, but I'm not sure how the ABS I have will agree with a piece that big. It might curl into a huge plastic burrito
This is also good motivation for me to perfect my print geometry at the outer edges of my build plate.