Invertible G4G logo

Print in spiral vase mode. PLA and PETG both seem to work.

To more easily invert the “G”, extend the inside of the “G” outwards to make a loop kind of circular, then invert that.

Gathering for Gardner (G4G) is a celebration of Martin Gardner's lifetime achievements which inspired many of us to explore science, math, magic, juggling, skepticism, etc.

I recreated the “G” from the G4G logo to see what the inverted shape looks like, and I think it looks like a talking head with a speech bubble.

Other spiralized (vase mode) designs I have made.

Other invertible models I have made.