Fine detailing using Isograph pen ?

just wondering if anyone has tried using one of these pens with thinned tamiya acrylic paint ?

http://www.euroffice.co.uk/euro_img/full/314878.jpg

they have a refillable cartridge and are designed to be used with coloured inks.

i have one from when i studied technical drawing at college. i've used it with watered down artists acrylic and it does produce a very neat line on paper.

i reckon if tamiya paint was thinned just right, it would work great on models for details such as badges/logos etc.

i'm going to have a play around with it tonight but just wondered what you guys thought...

i used to use one way back in the day when my dad did board drafting, worked well for me. haven't used one in a while though, i've been instead using a non-refillable one with a fine felt tip that works very well...

Gray

You have to thin the paint pretty well to get it to flow, so opacity on things like badges would be poor. But they are useful sometimes. I used one with Tamiya acrylic black to do the black trim lines around the F40 body.