Bock #6 250 Compatibility - Karas Kustom and Kaweco Supra

[BayesianPrior]

I've spent some time searching FPN, FPG, and reddit today and I haven't come up with a definitive answer to my question yet.

 

Do the Karas Kustoms Ink nibs and the Kaweco 250 nibs both use standard Bock housings?  Would they fit in a Ranga which has been tapped to accept Bock 250 nib units?

 

The housings look identical to my eye, except for the apparent absence of a nipple on the Kaweco?

[Honeybadgers]

I can't say DEFINITIVELY, but I do know that my karas starliner uses a standard bock nib unit that matches the kaweco sport. So that should be indicative that it will work. But maybe email karas and ask? They should answer quickly.

[Jamerelbe]

Karas Pens use standard Bock 250 housings, that will be compatible with a Ranga pen - I can tell you that definitively - the only difference is that they laser etch their own logo onto the nibs (and do some QC to make sure they're not selling you a lemon).  I *believe* the Kaweco Supra is also made by Bock, but I can't tell you for sure that they're threaded the same - though judging from the photos on the FPnibs website, I'd say so! (https://fpnibs.com/collections/kaweco-elite-supra-steel-nibs)

[BayesianPrior]

Thanks both for your answers.  

[Jamerelbe]

9 hours ago, BayesianPrior said:

Thanks both for your answers.  

 

👍

[BayesianPrior]

I adopted the empirical method.

 

I bought a Kaweco Supra nib unit from Cult Pens and successfully implanted it in my Ranga 3C tapped for Bock nibs.  Bock on.

[Jamerelbe]

1 hour ago, BayesianPrior said:

I adopted the empirical method.

 

I bought a Kaweco Supra nib unit from Cult Pens and successfully implanted it in my Ranga 3C tapped for Bock nibs.  Bock on.

 

Congratulations - glad that worked out for you! (And that I didn't lead you astray...)