7 point concentric ring fidget

Challenging to print with 0.4mm walls and 0.4mm gaps. You need good first layer adhesion and clean travel. My X1 has no problem with it in PLA or PETG. My initial profile has seam alignment of back. This produces the cleanest print if your printer, filament, and profiles are good. If travel leaves blobs having them aligned is much more likely to lock the rings together and random seam alignment would be better. If the rings expand easier/further in one direction it is likely caused by first laye