Very cool, thanks for the links.

Quote Originally Posted by ralphzoontjens View Post
Filamet is the best I have seen - 85% copper.
http://www.thevirtualfoundry.com

Otherwise try http://www.eumakers.com/en/3d-printe...cials/metallic
No copper but the aluminum is wonderful, these are very bright.

These are great as well: https://www.polyalchemy.com/collections/elixir-pla