This is an optimized version of “T1000777” “Dragon Napkin Holder” to be easier and cheaper to print.

The two halves of the model should lock in place once assembled. If this isn't your case just add a tiny amount of CA glue on the inner part of the joint making sure that no glue pours out of the model once assembled.

To print this model quickly with a 0,4mm nozzle you can use 0,3mm layers.