When lids are stuck, follow these steps prior to using the lid lifter
- spray perimeter of lid with penetrating oil
- allow to sit for the period recommended by the manufacturer of the oil
- using the blunt end of a heavy duty crowbar or heavy sledgehammer, strike the edge of the lid sharply at various points around the lid. This jarring action can help to break the seal
- on a very stuck lid, do not attempt to lever up the lid with the lid lifter until the seal is broken