Mere days after photos of a 35x35 surfaced, Preston Alden has unveiled a 49x49:
It weighs 30 kg, stands 34 cm tall, and consists of 13,827 pieces. Every piece of the cube was 3D printed using PETG plastic (aside from the bolts and springs).
Congratulations to Preston on such an incredible achievement. I've never seen olzing on such a large puzzle!
More info on the twistypuzzles forum: https://twistypuzzles.com/forum/viewtopic.php?t=39559
