The truss pieces from https://www.thingiverse.com/thing:2507787/ are great, but they would need to be glued to stay in place. Thus, this small connector can be used to put them together in a way that allows the truss also to be disassembled without breaking anything. If the connection is too loose or tight, simply scale before printing. It should hold the pieces in a way that they don't move a single bit.

Similar to https://www.thingiverse.com/thing:6617962, which I noticed only after I designed my own :)

Creality

K2 Plus

No

No

0.2mm

15%