Today will have two posts, line first.

This mornings lines are inspired by the end papers I glued into my next journal, photos soon, as it is drying.
I have been checking out your lines and samples, and am happy I finally figured out the Flickr group thing. Please join and show us your lines.
On to your questions and thoughts about the Ruling Pen.
Kristen (who has some great [Houston] commentary on her blog) emailed me with this statement:
I'm using Golden Liquid Acrylic and thinning it a bit with water. I do this in a little tray each day when I'm ready for the exercise and so each day it takes a while to get the fluidity just right -- more often than not, I leave it too thick and so you can see that my lines are a little "crumbly" looking and sit a bit too much on top of the fabric. Too much water and it blobs and bleeds too much. I suspect the answer is to take teh time to mix up a larger batch that is "just right" and store it in a bottle so I don't have to reinvent the wheel each day...
My response to this was:
I mix as I go. The paint should look smooth, have a consistency of heavy cream and should just about to drip off the brush when you hold it above your palette. The consistency is the hardest part of using this pen. But really, once you get it, it will be a cinch. Perhaps spending a bit of time in front of the pen and just playing with paint consistency is in order. When you put the paint in the pen, it should not appear to drip out of the 'beak', it should stay snug weather or not you use the dial to open or close the 'beak'. The paint will appear to stretch but will stay put. Nor should you have to open the 'beak' wide in compensation for the thickness of the paint, that just means the paint is too thick.
Cheryl is using thickened dye on soda soaked cloth. My first suggestion to you Cheryl, iron the cloth quickly and with assurance. Learn to do this when working with thickened dye, it is essential.
All of the above suggestions having to do with paint apply to dye. The consistency remains the same no matter the medium.
Using the ruling pen with ink is problematic for a few reasons. The first and major question would be, why do it?
We have such a plethora of pens that work on cloth, that using a ruling pen with ink on cloth is redundant.
Liquid ink is made to be used on paper which has sizing and finishes specifically formulated to hold and maintain the fluidity of ink, cloth does not have these same treatments and has the woven texture to boot.
Learn the needs of the Ruling Pen, this exercise is perfect for it-at the end of the 30 day period, you will be able to use a ruling pen on cloth, will be able to write and draw on cloth with fine lines. Dye and paint alike can be used to make lines on cloth. Using dye or paint in the ruling pen is about consistency. Once you 'get it', you won't think twice about it. Allow yourself the time.