Vortex in a bottle 3D printed cap

thingiverse

A fantastic and simple bottle screw cap design perfect for 3D printing that enables two soda bottles to connect seamlessly. Kids can easily create a mesmerizing vortex in a bottle with it! https://youtu.be/XdpwTa5dVms Two sizes of this cap are available: 14mm and 8mm. The video showcases the 14mm result, but if you opt for the 8mm size, you'll need to spin the bottle more vigorously to establish a vortex, though it will last longer. Some crucial printing tips: make sure to print the caps with support material at 20% infill and 100% solid infill, and a layer height of 0.15mm works wonderfully. Print Settings: Printer Brand: Ultimaker Printer: Ultimaker 2 Rafts: No Supports: Yes Resolution: 150u Infill: 100% Notes: Print it with full infill (100%) to ensure the cap won't snap when rotating the bottles. Support is necessary for the middle section of the caps, printed at around 20%.