Never, under any conditions, stop pouring with a mould partially filled. Always be sure there is enough melted lead in the ladle to completely fill the mould, before starting to pour.
The mould can now be easily opened by pulling on the handles especially if it has been properly dusted with the Ambu Mould Compound.
After the mould is opened, Figure [8], the castings are easily removed, without damage to either the mould or the casting proper. The workman does not, at any time, handle the hot parts of the mould or the hot castings.
Figure 8
The mould weighs 25 pounds, and is large enough to absorb sufficient heat to allow continuous pouring without becoming overheated. It is solid enough to be used without the need of a vise.
IMPORTANT INSTRUCTIONS
In all lead moulding, there are several important points to remember:
1. Never put anything in the lead pot that is not perfectly dry. A few drops of water in a pot of melted lead will cause an explosion and the hot lead will be thrown all over the shop burning and perhaps blinding the workman.
2. Have all moulds clean and dry.