This is a classic Burr Puzzle also called "Puzzle Knot" or “Chinese Cross”, this is one of many variations of this puzzle
Dating back well over 100 years, its traditionally made from wood but now we can print our own at home.
This Puzzle has medium difficulty
The tolerances should allow for a good fit without being too loose.
Printing should be straight forward, the profile provided was tested with PLA. No Supports are necessary
The author marked this model as their own original creation.