I tried to use the Tinkers' Construct smeltery to double Tritanium from Matter Overdrive. After smelting a couple of stacks of ore I found out there are actually 2 types of Molten Tritanium. You get the first type when putting the Tritanium Ore itself into the smeltery and a second version using already processed Tritanium. As far as I can tell you can't do anything with the first version of Molten Tritanium created from the ore. While NEI shows TCON tool parts are made using the liquid, the actual casts do not list that as a valid material. Going by NEI the second version can only be made back into blocks, ingots and nuggets. Is it possible to make it so that the first liquid can actually be used?
I have just recently experienced it and think it would be worth researching a fix. No tritanium tools are able to be made by tconstruct.