Surprise cube

thingiverse

Wait for the 3D printer to reach about 75% completion (or at least until the marble is fully formed). Then click pause, carefully remove the marble from the print bed using a tool or rod, restart the printing process, and let it continue until completion. I use the "cross-section" feature in my slicer software to visualize the inside of the printed object. This allows me to position the marble precisely on the heated build plate for optimal adhesion during the next print run.