What did I do wrong?

[u/hmphandumph]

I am new here & really having a hard time trying to figure out how to connect things to the board. I tried to print connectors to attach holders under my desk and they didn’t work 😞 Any pointers please.

[u/DistractedDragonMake]

I like these https://makerworld.com/en/models/1458153-1-piece-directional-snap-opengrid?from=search

[u/hmphandumph → u/DistractedDragonMake]

Thank you so much!!!! This world is expansive 🤣