Capping Procedure
 

My EZ-capped bottles turned out great, but my 12 oz regular capped bottles did not carbonize well. There’s still a small release of pressure, but not much.

I’ve since given all my 12-ozers a couple extra presses with my capper. They now have a small bump on top.

Is there something special about using a capper? I've got an old (1910) bench capper.

If the bottle breaks, it's too tight:D

seriously, I put them on as tight as my capper will go. If the cap turns at all in my hand (thumb and forefinger around cap, turn hard) then I pop it and recap. Usually only have to redo a couple per batch.

my flippers do seal much better overall.

Are EZ-capped bottles plastic, and allow heat to soak in faster than the glass ones? I know my beer is not carbonating this time of year due to cooler temps...

Mine are glass with hard plastic flippers.

No they are glass like:
http://www.northernbrewer.com/pics/fullsize/bottle-7015.jpg

Dose are Dem! I have a 12pk of those in 1L and a 12pk of them in ,5L as well as 2 12pks in a similiar type ,5L bottle from a different manufacturer.

I have 12 1-Liters and 16-16oz versions. Love them!