The 1.1 mm nib adds an extra dimension to my writing and is a terrific accessory
for my Kaweco Sport fountain pen. Although the nib is un-plated steel and
doesn't match the gold-plated trim of my black Sport pen, the 1.1 mm nib unit
and section threaded onto the barrel correctly and the black plastic section
matched the barrel..
I first tried the 1.1 mm nib with a Diamine blue-black cartridge and ink flow
started in seconds, the nib was smooth, and the flow was wet. Perfect!
If you wanted to use this nib unit with another color Kaweco Sport, the nib and
feed can be pulled out of the black, threaded section fairly easily. The feed
and nib are a correct match in size and length for current-production Kaweco
Sport fountain pens. A quick check may be accomplished by comparing the bottom
of the feeds. If they match, there's a good chance this nib and feed will
interchange with the one in your pen. The feeds have a type of registration
edge to help align the feed and nib when changing them. Sometimes, a twisting,
back and forth motion, while pulling out, helps when removing the nib and feed
from a section. A little vegetable-based silicone lubricant on the top, back
end of the nib can help when sliding in the nib and feed into the section. Just
don't get any lubricant on the feed itself since it can inhibit ink flow.
Thanks to JetPens for providing such a terrific, handy replacement/accessory
The nib itself is more of a stub than an italic, somewhere between a stub and
cursive italic. It's a bit more stub like than the TWSBI 1.1 nib. It's not just
the nib/feed assembly, but also includes the sleeve the nib/feed assembly fits
into. I. e., it's the entire bottom of the pen. It screws into the barrel.
The nib is very smooth. The feed needed to be seated a bit more tightly in
order to restrict the ink flow, but after that it produced acceptable line width
variation rather than a line of ink with a visible meniscus.
All in all I like it. Eventually I'll pull the nib/feed assembly out and
install it in the OEM part. Because I have a green Ice Sport I'm used to seeing
the green sleeve. I would have preferred to receive only the nib/feed assembly,
but that's probably the way Kaweco ships these. It's not hard to take apart.
I'm happy to have a pocket pen with a "calligraphy" nib.