Since we don't appear to have a forum for pens that are not fountain, ballpoint, or rollerball pens, I'll just do this here. <G>
I picked these two up on eBay:
I was tempted to load the red one, but got to thinking about Marsh's solvent-based ink, and thought it might be good to see what's in it first. The back of the card says "Cartridge contains felt wick loaded with T-INK" and the Marsh Web site shows both dye and pigment T-ink types still in production. I downloaded the MSDS for red T-ink and found that it's 73% xylene, 16% ethylbenzene, about 1/2% toluene, and some other nasty things. Keep in mind that this is the current formulation; it's likely that these ancient cartridges could contain even nastier stuffs.
I don't think I'll be opening the cartridge.
If I can find an old, dried-up cart, I may see about adapting the pen(s) for water-based ink.
A CADO Flo-Master refillable, a Wearever refillable (by exchanging the entire barrel), and seven Esterbrook "Felt-Riter 49" watercolor markers. I knew of the CADO pens, later bought up by Esterbrook (I have one of those as well), and had seen listings for barrels for the Wearever, but I've found nothing at all about the Estie markers. They barely lay down any color *unless* I first wet the tips, then they go like gangbusters until they dry out again. I may try pulling the tip out of one and dribbling some water down into the barrel to see what happens. I'd be interested in knowing more about these things' history if anyone knows anything.
Edit: Rehydration works, so far.
-- Edited by Chthulhu on Sunday 21st of July 2013 07:11:00 AM
Another CADO marker, this one is a "Jr Fountnbrush." The only images I've found for "Fountnbrush" show a rather more modern styling for the package and pen; I'd be really curious to know about when this one was made!