bruce wrote:Can't see how you can force a screwdriver through the steel casing of an oil filter. Unless it happens to be a machete with a big swing.
The steel casing is only thin.
Normally with the screw driver method you thump the end with a hammer, but if you have enough room to swing.your arm you could fairly easily get through the side with a good stab.
The case of an oil filter is about the same strength as a tin of beans, so not exactly armour plate.