75mm x 75mm Aluminium Sand Flask
Traditional Jewellers metal casting flask/moulding box robustly made from Aluminium
10 swg Aluminium tube thickness 5mm 
Made from 2 interlocking casting rings to ensure perfect alignment.
The 75mm flask has a 25mm round side entry hole to allow pouring from the top or side.
Outer dimensions 75mm wide and 75mm high two parts are combined height
The clay will need to thoroughly hammered to a tight compression or it will collapse when you remove the original piece.
We use talcum on all seals and insides to help with release.
These are also ideal for those interested in Delft clay casting
Be aware you purchase mould only not sand