Prusa Z-axis topper for MK3. The Topper comes in 2 pieces, the lower piece needs to be inserted into the upper Z bracket from underneath. Then the Angel slides in and each piece secures the other. She isn't going to fall off accidentally. (...as long as you don't blink.)
derived from InlandDan's posting (linked) originally by fantasygraph.
I did use a raft on the lower piece, and supports on the angel.