This is a platform 9 ¾ sign from Harry Potter. The sign can be printed twice for a double sided sign, or once for single sided. The arm of the hanger needs to be mirrored and both sides printed to use the wall mounted bracket. The bracket is designed to be easy to hang, then the arm slid in from the top with a dovetail joint.
These are the chains i used to hang the sign https://www.amazon.com/dp/B0B5JRVS8S?ref=ppx_yo2ov_dt_b_product_details&th=1
I had to use pliers to straighten the hooks, feed them through the holes, then bend them back.
***update*** made the sign thinner to use less filament, as well as made each color start at a specific height for color changing without an AMS. Also, the holes in the hanger and the sign were made larger to fit a chain more easily.