Good day, I bring to you today the MINI Pentagon Bubbler with a pentagon base and a hollow number eight for air circulation, Print slow for best results and for reassurance take a look at overhang calibration.stl for a overhang test. For more info take a look at MINI Pentagon bubbler.docx or Printer safety and health.docx. Come by to youtube, https://www.youtube.com/channel/UCCRevpPUP0wB6l55kC03ADg. Video for MINI pentagon bubbler coming soon. A large version is also available. NEVER LIGHT PLASTIC ON FIRE, THE POISONUS FUMES ARE DEADLY, use a glass bowl or attachment. I do not condone under age smoking.