General Care & Use
 Store crucibles off the floor in a dry, warm place. |
 Do not nest one inside another. Separate layers with hardboard. |
 Do not roll crucibles. Move using a sack truck with padding. |
 Check thoroughly for cracks or damage before use. |
 Use the correct crucible stand which must be central and support the whole base. |
 Allow space for expansion between crucible and furnace lining/cover. |
 Use correctly positioned grip bricks in tilting furnaces, leaving gaps for expansion. Do not hang crucible on spout. |
 The flame path must be tangential to the crucible. |
 Ingots should be loaded carefully into the crucible using tongs. |
 First charge with light returns, as a cushion, then add ingots vertically. |
 Only add flux after the metal is molten. |
 Avoid ingress of cold air by ensuring that the drain hole is sealed. |
 Lift-out tongs should hold crucible on its lower third and fit evenly on both sides. |
 The crucible must be emptied before switching off the furnace. |
 The crucible should be cleaned out carefully every day while still red hot. |
To view and print a pdf of the Crucible Care document (available in several languages), please visit the library.
