Vac-Fill Restoration Test
It is very important to get a good tight seal when doing a Vac-fill restore. This is how we test each Vac-filler before putting the nib unit back in place. By doing it in this manner we do not waste time or risk damage to the nib unit repeatedly taking it on and off should there be an issue.
Once the pen is completely assembled, it is time for the fill test. Some of the video is shown at 50% speed for easier viewing.