Prusa3D Core One assembled from kit ( https://www.prusa3d.com/product/prusa-core-one-kit/ ) in roughly 36 hours, including 5 hours of sleep and frequent toddler-herding
Quite fun and satisfying
I did make a few mistakes, but wholly my own, and avoidable by reading the actual instructions
Benchy test print (15 minutes) is complete, so I guess I can start planning holiday show-bag gifts for nieces and nephews
I also have a Bambu Mini and it was a disappointing unboxing and setup. I think it took longer to get the machine registered and run the calibration than hooking up the AMS lite and plugging everything in.
And Prusa’s assembly instructions were the best I have ever seen. My Mk3s came with a large full color photographed and printed manual showing every step and assembly with a complete description. It was glorious.