Pouring an Aluminum Brass cast.
Casts are used to turn liquid material from the Smeltery into tool parts in the Tinkers' Construct mod. To make a cast, pour liquid Aluminum Brass into a Casting Table ontop of the tool part for the cast you wish to make. it does not matter what the tool is made out of (?)
The cast can now be used to make tool parts directly from the smeltery. Put the desired cast in the Casting Table, then turn the Faucet to let the liquid metal fill the cast. It should take a moment to dry.
Completed Aluminum Brass cast on the Casting Table.
Casts Update
In the newest version of Tinkers' Construct, you must now create the casts from prefabricated parts. The process is roughly this: 1. Create the stencil for the part that you want at the Stencil Table. 2. Place the stencil on the Part Builder. 3. Place stone into the Part Builder and make a stone part. 4. Place the stone part onto the Casting Table. 5. Create a cast. Empty the liquid gold or liquid aluminum brass from the Smeltery onto the Casting Table (the part should still be there).
This will create a part cast, which you can then use as a basis to cast other parts directly from the Smeltery. Simply place the fresh part cast onto the casting table and pour whatever liquid metal you want to use onto the cast.
It's a little more time-consuming to do it this way, but it's also more "honest" to an actual casting process.