2 part LED sign. Front must be printed face down and the back face up. In the 3mf file these are already oriented in this fashion. The front has a hole at the bottom for the cord and the back has a hole for hanging.
Great old design...had to print it straight away...but unfortunately it didn't hold together...same problem on the second try...when I removed it from the plate, I only had the ring in my hand .....A pity....
As you know there's a lot of surface area adhered to the plate when finished. I usually wait at least a half hour or more and it will detach itself when completely cool. If you can't wait this long then put it in the freezer and it will have the same effect.