I know there have been a few question about user experience with Colorfabb Copperfill and Woodfill. I thought I would post my experience.
First off, surface texture for both filament is excellent. Copperfill density adds a nice feel to parts.
I started off with a 0.6 nozzle on the woodfill, that went fine, so I dialed back to 0.4, still fine, but the detail needed finer yet. At the same time I decided to switch to Copperfill as the model (earrings) would benefit from t