Pocket flexigrid fidget, small size, 6x6mm per column, parametric

Should print-in-place fine with your favorite settings, as long as your printer is happy with 0.2mm clearances. I've printed it in PLA and in PETG.

Will probably need some gentle un-sticking after printing; try to put a knife tip between each column and gently twisting until it "clicks", once on the top and once on the bottom. Be careful with your fingers!

stl/step is 5x5 columns, but the f3d file is parametric and I've printed up to 40x40 without issue. The small ones are more satisfying though. Give me a shout if you want a different amount of columns.