How to Refill Hong Dian Black Forest Fountain Pen
Refilling the Hong Dian Black Forest Fountain pen with new ink is easiest when using an ink well, instead of a cartridge. When refilling, make sure the Vent Hole (Breather Hole) on the nib is submerged in the ink before turning the knob to fill the ink reservoir. Here is a great fountain pen diagram for reference.
A faster way to refill the Hong Dian Black Forest Fountain pen, without taking it apart.
Refill your fountain pen using cartridges the easy way. Ink cartridges are the fastest way to refill the Hong Dian Black Forest Fountain pen, but they can be very difficult to snap in place.