Is the Rotring ink is the same as Koh-I-Noor? It's the same bottle, and I've heard that their technical pens also have interchangeable parts... I've been using Koh-I-Noor Ultradraw ink which is meant for technical pens and it works fine with my brush pens.
Is the Rotring ink is the same as Koh-I-Noor? It's the same bottle, and I've heard that their technical pens also have interchangeable parts... I've been using Koh-I-Noor Ultradraw ink which is meant for technical pens and it works fine with my brush pens.