I tried to make the “sliding section fidget cube thingy” that had a few versions pop up lately… but i wanted it to be parametric.
attached is a FUSION 360 file for you to mess around with and get custom sizes!

NOW IN KEYCHAIN SIZE!

(note the paramaters comments. to change parameters go to: MODIFY>CHANGE PARAMETERS>EXPRESSION)

The print i showed was done with PLA altho i would reccomend PETG since it slides better…

Make sure your bed adhesion and overhangs are on point! you could probobly get away with 0% cooling thanks to the looooooong layer time

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P.S
if the sections move with too much friction, a solution i found it to WASH the print in water, while sliding the sections back and forth.
 

Congratulations to Gunny 3D for winning the 15*15 challange!

Honourable mention goes to Scott Yehle for his print!