I've been looking for an alternative technique to darkening panel lines aside from sludge washes, which tend to be messy if you don't get the mixtures just right.
Just wondering if anyone else has heard of these
ZIG Memory System Millennium Pens/Markers. I happened upon a black
0.20mm tip (a.k.a. size 005) version of one of these pens at a Hobby Lobby so I thought I'd give it a try. When scribing the recessed lines with this it came out rather dark, a little too dark, but the tip was fine enough to fit the recessed lines of an old P-51 I use to test new techniques on (admirable known as "Mistake Millie"). To lighten the dark panel lines I moistened a Q-tip and went over the panel lines. It either cleaned it right up or lightened it to a shade that was pretty darn respectable. Being able to lighten/erase the ink depended on how dry the ink was, how hard I pressed along the lines with the Q-Tip, or how moist the Q-Tip was. Also, I found saliva worked better as an erasing/lightening agent than water when moistening the Q-tips, but if that grosses you out, that is understandable.
These Memory System Millennium Pens/Markers come in 5 colors Black, Red, Blue, Green, and Violet. And I must say are one of those products I've been wishing I knew about a long time ago. Clean up is easy if you make a mistake, and I'm fairly pleased with the results. I'd be interested in hearing about other experiences about using these if any one out there is willing to share theis experiences.