4 Views PremiumOct 20, 2025
200 wooden track balls and large wave boards in multiple colors were tested successfully
160.8K Views
Topology puzzles from childhood
3.5K Views
The Impossible Twelve Copper Pillars
4.6K Views
How could a six-piece T-shaped puzzle fit in?
21.1K Views
Cardboard track ball, rotating elevator successfully tested
12.4K Views
45 days, the secret base of transformed design
4.7K Views
The pace of innovation has never stopped since ancient times, and good works can withstand the wait.
8.6K Views
Saving pot made from ice cream sticks.
1.2K Views
Wooden track ball, tested successfully
14.2K Views
How can we separate iron blocks?
4 Views
The Adventure of Rolling Balls in Life
24 Views
Do you still believe your eyes?
41 Views
unexpected results
1.3K Views
Do you think these six nails can be placed on at the same time?
36 Views
How powerful is a load-bearing bridge built with a few small wooden bars?
48 Views
Topology in life (4)
3.0K Views
Can you tell at a glance how it's put together?
160 Views
The Revenge of "A Designer". #kuila#
34.0K Views
Hilarious finger creative painting, fingertips draw a little life!
53.5K Views
New concept bike! !
9.8K Views