Last week I had the opportunity to try out cold casting with zortrax. Used this tutorial:
1. 3D printed the model shown in video from Z-ABS and with 0,09 layer height.
2. Sanded the model and used acetone vaporing to smooth out the surface.
3. Made a silicone mold from the model.
4. Poured a mix of resin and iron powder into the mold.
5. Demolded and polished the model.
Whole process took almost 3 days because the silicone I used had to dry 24h and the final model had to dry more than 24h. Overall Zortrax did a really good job printing the model.
For comparison I also added a picture which has got a few parts printed from Copperfill (not printed on zortrax). Copperfill took more work afterwards, but got a good result within 5-6 hours including printing. Wonder whether Zortrax will eventually release something similar to Copperfill or Bronzefill? Read something about Z-ALU from somewhere...