Customer Reviews

Koh-I-Noor Rapidograph Technical Pens No. 3165 1 .50 mm

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I'll start by saying I don't use this pen for drafting. I love to write with this pen because the lines get really dark, are extremely consistent, and the feel of writing with it is very satisfying, like a sharp pencil or a fountain pen.

These pens do require you to keep it at a roughly 80-90 degree angle to maintain ink flow, but I don't mind that.

I also don't like to use the Koh-I-Noor Technical Pen Ink. It clogs the pen quickly and regularly. Black India Fountain Pen Ink almost never clogs it, and is still very dark and doesn't soak through paper.

With minor maintenance and the right ink, this pen will last you forever.

Chem Undergrad is right on, I feel. I started writing every day with a Rapidiograph pen back in 1960. Yes! 1960! Back then, the pens were black plastic and looked more or less like ordinary fountain pens, albeit with very same point design. I suspect the points would interchange with those available today. I have gone through perhaps a dozen or more sizes and examples and still use Rapidiographs for most writing. I love them. Can't say about the ink question but think I may try the brand Chem Undergrad recommends. . . .

Rabe Anton