Originally Posted by ma2brew
I believe another issue here isn't just the pressure of the expending cork on the inside of the neck, but also that many cork pullers use the rim of the bottle as a fulcrum to pull the cork. The ones that don't, and that are simple a screw with a T-handle leave you potentially holding a bottle by the neck, where it is likely to break, while you forcefully yank the cork out.
The rim, and necks of wine bottles are reinforced for just these purposes.
I wonder if the screw tops for the brown plastic bottles
that some brewers use will fit these threads? I think those can even be reused a time or two.
That's a good point- I never thought of that! Getting the corks in is one thing- getting them out might cause some broken bottles. They are soda bottles, designed to hold carbonation pressure, so they won't explode when capped, but they may not be able to take the pressure on the neck from the opener.
As far as how long a test should be, I'd say a few days would give you an indication as to how far it'll seep down.