slow drying ink source?

I have the same problem with my Wexler thermo humidigraph. This ink is such a low volume item that it is expensive. The actual pens are ridiculous.

J-J-

What about rubber stamp ink? You buy it in a small bottle that is corked by some kind of sponge, and smear it on the stamp pad. It does not seem to dry on the pad, but soaks into the paper that is stamped.

I think the price is in the $5 range, but you might already have some.

Fred

I can't find composition for this ink but would buy some cheap fountain pen ink and try adding things to it to slow down drying. I even saw some mention of adding honey to the ink. There are also water soluble solvents like diethylene glycol that might work to slow down rate of evaporation.

Price of inkjet printer ink annoys us. You used to be able to re-ink cartridges but now with HP and maybe others that will not work.

Reminds me decades ago of researchers at Kodak telling me that they sold their cameras at cost but made huge profits from their films.

Now the printer makers are doing it, selling printers at no profit to make it up on ink.

I'm surprised Harbor Freight doesn't have a line of Chicago Electric inkjet printers with 1 gallon ink refills for $29.95.

food coloring in a glycerine base?

The following formula is recommended :

Aniline colour . . 10 gm. Glycerine 125 cc

Sugar . . 10 gm. Water . . . . 250 cc

Heat the water and dissolve the sugar in it ; add the glycerine in small quantities and stir the mixture thoroughly until each added portion is dissolved. Beat up the aniline colour in a small quantity of the mixture and stir into the remainder of the mixture. The ink is ready for use when cool. Various dyes can be used, giving different coloured inks.

This normal type of recording ink can be used at ambient temperatures down to about 5° F. in the normal triangular pen, or to about —30° F. in a pen of the crow-quill or tit-quill type, A special ink having the composition, water 50 cc , ethylene glycol 50 cc , methyl violet 2 cc , can be used at temperatures down to about -50' F. with the triangular pen or -75 °F. w ith the crow-quill or til-quill pens . .

Inkjet ink is FAR from slow drying.

Selling at below cost of manufacturing, actually - in many cases.

The OP was lookin for slow-drying ink.

They spend a fortune to design a 35mm film cartidge that couldnt' be opened and reclosed without damaging it.

They've been doing that for a long time. Or at least they've been making it hard to refill cartridges or use aftermarket. Maybe they stepped up their game recently??

Wow, yours truly wasn't sure how he missed this until today (and found it in a google search to boot), but THANKS! I intend on giving this formula a try very soon.

JJ

Starting to look into the ingredients. Only hitch seems to be aniline color. Is this food coloring drops or ?

I was kinda wondering why there was no response . . ..

I just stirred up a batch a little while ago. I was able to easily source the water of course, glycerine, and sugar. I scaled everything down to 1/10 of the recipe for now during testing. Only problem was the dye as no one near me seems to have the powder, so I'm trying the RIT liquid fabric dye for now. The result seems a lot thinner than the Staples ink I had been using, but time will tell as the drum rotates and I'll see what happens.

Generally used for leather dye- Also used in wood stain. Buy it at Lee Valley.Water or alcohol soluable -originally made from coal tar and tannin.

Any good wood finishing or leather craft place should have some - or even an artists supply. Moser and Hewitt are two suppliers but there are likely many others. Might even get it at Home Despot

Perhaps this?

Link does not work

I don't know why people use bitly.crap Just use the main url. Sheeeeeeeeesh!