What Pen Have You Converted To An Eyedropper?

[cedargirl]

(I think it's a Preppy, but couldn't swear to it).

Probably is. That's what is usually shipped with Noodler's ink. I got mine with some Kung Te-cheng. They look different because they don't have the large "Preppy" labelling on them.

I think the important thing is to choose a pen that has fine threads. Big junky loose threads would have a greater risk of leaking IMHO.

It's interesting that the Serwex/Camlin/Airmail Indian eye-droppers don't use o-rings. They rely entirely on the fine thread and effective silicone grease. They might blob occasionally, but they don't leak from the barrel threads.