I picked up the Celtic Bio with the Tribal engraving off of Ebay. The casting is solid and the proper size with A LOT of flash to remove. I guess the mold doesn't seal well. Overall, really, it's not too bad. The reason for my question is that the mask is finished in a fine hammered texture and I would like to smooth it out. Not perfectly smooth, but much smoother. Suggestions for the experienced masters? Please.