Obviously to be able to use the ''blow filler'' you need good lungs to be able to blow with force, and you need to do so in a position where the pen has the nib immersed in the ink, which makes this filling system anything but comfortable. For this reason the pens were also supplied with a pump to be used as an aid for filling. | Obviously to be able to use the ''blow filler'' you need good lungs to be able to blow with force, and you need to do so in a position where the pen has the nib immersed in the ink, which makes this filling system anything but comfortable. For this reason the pens were also supplied with a pump to be used as an aid for filling. |