Collapsible Box With Lid

I modeled a print in place mini version of a collapsible crate.  Here is a full size version from Amazon.

The joints are pretty stiff when you take it off the printer.  You to gently work them to get them free and loose.  I have printed this in PLA on both an Ender 3 and a Prusa MK4.  

This can be tricky to print.  If it seems to stay welded together, try printing with the bottom layer set to 0 - that was how I had to print them on my older ender.  

Try a brim or raft if the bottom of the box or lid warps.