The original snap design was loose, even though it can solve most daily usages, it's still loose. The directional snaps are better, but they can't handle vertical pulling force well, because it's only strengthened in one direction.
The self expand ones are better, but still can get pulled out easily due to the flaw in the directional snap design.
Multiboard misled people into the "threaded" designs, but the actual strength issue comes from the snap base design, and material strength.
So SuperConnect split the snap into halves, you put them on, insert the lock, rotate 90degs, done, easy and rigid.
Test results(full version):
Test method: pulling perpendicular to the grid, with MultiConnect thread/lock, until the snap pops out/break or the grid breaks
- Original directional snap: 5kg, on the reinforced side
- Self Expanding snap: 16kg, on the reinforced side only
- Self Expanding snap, 7kg, right from the center
- SuperConnect: 20kg, on both sides
- SuperConnect: 14kg, right from the center
I haven't managed to break the snap on direction parallel to the grid, my hands hurt hard before I can pull it off.
Try yourself by printing the base snap with the included hook.
https://www.printables.com/model/1708514-superconnect-snaps-for-opengrid
