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Product Description
Featuring an eye-catching combination of ebonite and resin, the Opus 88 Koloro is a great choice for anyone seeking an eyedropper-filled fountain pen. The transparent body gives you a view of the ink level and the nib when the pen is capped Read More
I really like mine. Jumped on it soon after they showed up at the small US retailers. Paid full price too *sadface*
The nib looks like a standard #5, so you can play with it to your heart's content. In fact : I was able to fit a Franklin Christoph nib unit in there (I had an extra SIG nib, which I now should treasure as there will be no more made with the passing of Jim Rouse :( )
Or you can just experiment with swapping the nib only. It's friction fit.
Ink capacity is humongous. The eye dropper is workable but I prefer blunt syringes (so as to not get ink on the threads).
One last thing to mention : this is a writing pen, not a quick note taker. The cap takes 3.5 (!) full turns to remove.
EDIT: Here's a filling trick I learned. First of all : don't fill the barrel all the way : the section will need room to be screwed back in ...
Also : on the first fill when the feed is still completely dry, only screw in the section enough that it won't leak. *then* turn the pen nib down and finish securing the section. This will force out a bit of ink, saturating the feed. Oh and do this over a couple of paper towels.
Yes, it's an Eco. That it's the only TWSBI to rely on a friction fit is news to me. I had it only briefly before our 'falling out.' Maybe a faulty assembly. Thank you for the photo. The Opus nib/feed looks more substantial. I like the high capacity seal system, but will likely save for a Pilot 823 or Conid version. Thanks again.
Hey, thanks for this. I was unaware that the nib-unit/collar unscrewed from the section like that. And props for the warning about the o-ring - that little bugger is certainly tiny.
I like the engineering that went into this pen - no leaky bits between the nib-unit & section, etc. The Opus 88 team have done themselves proud as far as I am concerned.
And yes, I'm fairly certain the nibs are Jowo - I just can't find where I read that now.