hey, so most of us know that zigs, martha stewart, and woodcraft glue pens and stain pens all work for quick and cheap flowpens.... they're relatively easy to do, and mess free as well. However, especially in the case of the woodstain pens ive seen, they are quite bulky, so the other day, while wondering how i could scrounge some cash for a Krink K-71, i noticed something in my laundry room. not a chemical perfect for a staining ink, but, a tide to go pen. I checked bombing science, and, after seeing nothing, i realised i had come across a gem. They dont open very easily it would appear, however i find with a vicegrip, they come open in about 10 seconds, just use judgement on where to put the pliers. The top (valve and all) comes out , leaving a perfect area to rinse out, and fill up with your favorite inks. I found the shape to be almost exact to that of a K-71, although the nib is its downfall. The nib is made with two long indentations on either side, which allows the ink (or detergent) to flow through the extremely hard surface. However, i found that if you use some homemade, milk consitancy ghetto krink, it flows through, making a drippy tag while you work. It hasn;t leaked out on me yet, but the problem may still be there, so i hope my finding helps somebody, as they're cheaper than the zigs, but dont go fucking it up, and getting ink everywhere... THIS MARKER IS MESSY AS VAIJ!