coaster for IKEA "nonagon" style drinking glasses

I wanted a coaster that fits the drinking glasses I usually use, which are IKEA “nonagon” (9 edged) style.

Tried to experiment with patterns again, so we have hexagonal mesh on the inside and scales on the outside. Whether or not holes in a coaster make sense is a discussion for another day.

Printed with 3 walls and 20% infill, no support.