First piece:

This is how I modelled a cylinder with conic top and hole in the middle in Rhino 7. I started with two circles which were forming the letter O. I used ExtrudeCrv command to extrude the outer circle by 10 mm and inner circle by 2 mm. The bottom surface was created with the PlanarSrf command, while the top surface was made using Loft. I exported the Rhino model as an .stl file and opened it in Creality Slicer 4.8 to slice and convert it into .gcode. The piece was printed on an Ender 7 printer. 

Failed print:

The first print failed due to a lack of adhesion to the print bed, causing the piece to shift during the printing. I switched to another printer, and it worked as expected.

Second piece:

The goal was to model an organic shape with a zigzag crack inside. I used the Polyline command to sketch a zigzag inside a banana-like organic shape, then offset it with the Offset command. I connected these two polylines using the Line command. The base surface was created with PlanarSrf command, and the vertical surfaces were made using ExtrudeSrf. I created an irregular hilly surface from a line network with Patch command, moved it above the base surface, and trimmed it to a shape with the trim command. I exported the model as .stl file and sliced it in Creality Slicer 4.8, then printed it on an Ender 3 S1 Pro.

Failed print:

For the first attempt, I used the Ender 7. The base was printed well, but the printer suddenly stopped, leaving a large amount of filament in one spot where the nozzle got stuck.

Bonus piece:

As this was my first experience with 3D printing, and I wanted to print something practical. I measured specific dimensions and designed a custom hanger for my dorm room. The model was sliced in Creality Slicer 4.8 and printed it on Ender 3 S1 Pro. The print shifted on the bed, likely due to a small base area, resulting in filament spaghetti, which I removed with scissors. Despite not turning out perfectly, the hanger is still functional.

Dancing House, Prague (1992) – Vlado Milunić, Frank Gehry

The building’s shape represents two dancers, Ginger and Fred. For this task, I focused on the dynamic glass tower – Ginger. To create its form, I made a set of horizontal curves at different levels. The bottom curve matches the letter D from the Task 0. Then I used the Loft command to create a smooth surface. I exported the model as .stl file and sliced it in Creality Slicer 4.8, then printed it on an Ender 7.