Postby Lachlan717 » 12 Sep 2014, 19:17
You don't need one of these; don't waste your $$$!! In fact, they can be a bit dangerous. The sudden release of pressurised gas can damage the drum, you or both.
Try using a hose with a stopper on the end. Fill the drum, then put the hose/stopper in the hole and gently add water. This easily pops the lid in a controlled fashion.
Or, just use your fingers and work the lid off in small movements.