# How to Polish copperFill & bronzeFill Filament

## Overview

https://www.youtube.com/watch?v=AU8WvGveNj4

copperFill and bronzeFill are metal infused 3D printer filament. copperFill has a bit of a browner, more rustic look than its bronze counterpart, once polished.

![](https://cdn-learn.adafruit.com/assets/assets/000/022/700/medium800/3d_printing_hero-copper2.jpg?1422315762)

Produced with a micronized copper powder which has been infused into a common PLA plastic, copperFill will print easily using an all metal hot-end. Colorfabb warns against using any hot-ends which use a teflon isolator coupler, as the filament has been shown to clog these devices.

![](https://cdn-learn.adafruit.com/assets/assets/000/022/734/medium800/3d_printing_before-after1.jpg?1422453149)

After polishing, prints look like they were cast in metal. In this guide we'll look at achiving super shiny results, without any liquids or futhers preperations on your part.

- [Next Page](https://learn.adafruit.com/copperfill-filament/usage.md)

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