NPD with nib swap. My moonman T1 finally arrived and fits a #6 FPR ultraflex very nicely! Only a little bit of railroading when the ink starts to get low. Really happy
Noodler's Konrad Flex Fountain Pen - Clear Demonstrator | JetPens
NND] The Fountain Pen Revolution #5.5 Ultraflex fits in the TWSBI Eco! : r/fountainpens
Flex & Fast Writing - Vintage Fountain Pens, Flexible Nibs, Super Flex Nibs, Wet Noodles, and Penmanship