Every now and again you open up a button filler and find ... nothing. No sac, and no pressure bar. So you get out your stock of pressure bars and select, or if you're unlucky cut, one to fit.
But how long should the pressure bar be? A bar that gives that nice click as you release it has to have a little tension left when the button is at the top of its travel, so it’s likely to be pressing on the sac all the time a little and reducing the pen’s ink capacity. If you leave the bar ever-so-slightly short so that the button is just loose when at rest you maximise capacity but lose the click.
What do you do?
Edited by PDW, 14 September 2013 - 16:08.