Terraforming Mars - Resource Tokens

Resource tokens for Terraforming Mars.

After dozens of games, the cubes that came with my set had started to wear down. The copper paint wore off, and it was sometimes difficult to tell the copper from silver cubes.

I used [this set of filaments](https://amzn.to/2IZJXyD), which includes copper, silver, and gold metallic silk. These came out quite well.

Have play-tested with these. They work well.

Some sanding may be necessary to smooth out the faces of the coins.