Love this stuff.
I polished colorfab bronze fill and copper fill with the Polishing Paper Set and the result is amazing! The process is easy:1- 2 minutes of polishing with each sheet is enough.
Well thought out product and very good value for the money! Sourcing high grit sandpapers can be difficult/cost prohibitive but Proto Pasta makes the job much easier for you. I can see uses outside of 3D printing as well. I made a quick video about how easy the sandaper is to use when polishing items! https://www.youtube.com/watch?v=5oT_ExC_UuM