B5. Pouring in the second hole.
The sprues on this mould were to small. |
B6. Pouring in the third hole.
Bcause of the small sprues, the small pouringholes and the concave
surface ... |
B7. Pouring in the fourth hole.
....the metal flows over the top and contracts together. Thats one
of the reasons why one should start with melting more aluminium then strictly needed |