u/Disastrous_Truck7622

I’ve never seen this happen to stands in all my years of being in music, until this job. My students go to raise the stand by pulling the top up and it just completely comes off??? I have more broken stands than working ones at this point I’ve tried tightening them with a wrench and it still happens. The brand is national public seating.
Is it a lost cause? Has anyone had this happen? I’m flabbergasted I literally have a graveyard of music stands