Chao đèn cong cong xù xì

PETG or other heat-resistant filament recommended. Transparent looks great.

• Print with the circle on the bed
• Simple brim on the inside is useful for adhesion. 
• No supports needed.
• If you use fuzzy skin (see pictures) use a modifier to keep at least inside of the circle part non-fuzzy to keep the diameter fixed.

Wall thickness is designed for a double-wall with a 0.6 nozzle, layer height is whatever you need.

Hole for an M4 screw. I used a grub screw for aesthetic reasons.