Backing / border for star trek lapel pin

I printed this at 0.2mm in sainsmart black tpu.

I just wanted this to look more like the lower decks badge if I was going to wear it.  Keep in mind this won't snap into place - you'll probably want to use double sided tape on the inside or something to keep the backing stuck to the metal.  

for this:

https://shop.startrek.com/products/star-trek-silver-delta-shield-lapel-pin