Hi Teo, I’m a subscriber from your YouTube channel . Let me tell that I recently discovered that the Rotring Art Pen works with India Ink, I was afraid of refill the ink cartridge with India ink but I haven’t any other Ink, and fortunately it works, it flows nicely and you can clean it with water when the cartridge it’s empty, just like a Rapidograph.
Hi Teo, I’m a subscriber from your YouTube channel . Let me tell that I recently discovered that the Rotring Art Pen works with India Ink, I was afraid of refill the ink cartridge with India ink but I haven’t any other Ink, and fortunately it works, it flows nicely and you can clean it with water when the cartridge it’s empty, just like a Rapidograph.