i will be developing my 5th gen ebonite feed.
based on years of experience on my 4th gen ebonite feed,
i have found some areas i can improve upon.
1. first consideration is feed diameter
usually #6 nibs have 6mm diameter feed.
in order to make ebonite feeder more stably with greater durability i've chosen 6.5mm,
same as the 4th gen predecessor.
the nib is designed for 6mm feed, but 0.5mm diameter increase barely has any impact, based on my years of observation.
2. second consideration is airchannel design
the below photo shows air channel structures of
bock, jowo, my ebonite feed (4th gen), typical ebonite feed
for the 5th gen ebonite feed prototype, i've chosend below air channel structure.
striking feature is the center hole air channel in the front area.
i've based this draft on my experience of the 4th gen ebonite feeder.
i can think of some advantages
1. easier ink filling procedure
due to the center airchannel, nib sealing / nib immersion depth is much less irrevent,
leading to easier ink fill for ebonite feeder.
2. nib setting easier
current 4th gen requires heat setting for proper function.
the 5th gen structure enables easier setting for mass production
3. ink flow improved
based on my knowledge and experience with the 4th gen, i've altered ink flow control mechanism for the 5th gen.
4. compatibility with con-40/70
this enables thicker tail portion, improving rigidity by factor of 2, compared to previous version
also machining difficulty will decrease
5. addition of nib size engraving
thanks to much research, now i can incorporate nib size engravings mechanically directly on the feeder,
at the same time achieving mass production.
below parts were used in this research
from left:
eureka ebonite feeder gen 4
bock feeder
jowo feeder
