Hello Guys, you may or may not have heard about me, but i have been a member of this forum for long(different acc).
I have much enjoyed interactions and valuable information in this forum.
I am a fan of fountainpen writing. It began as a hobby back in my middle school years.
I started grinding nibs in high school. and small tweaks in university.
during my military service in South Korea, I designed fountain pens and machines required to make it.
after military service, I started making all the machines required to make fountain pens.
after two years of struggle, here i am.
i really admired small scale fountainpen craftsmen around the world, such as Nakaya, Namiki, Ranga, etc...
But I decided to take one step further...
I began with ebonite barrel, cap, grip parts.
I first began with Indian import ebonite material. but i had some issues with quality(contaminants, large pores, discoloration)
then i switched to Japanese ebonite supplyer. I am very satisfied with the quality of the material.
All my ebonite parts are made with Japanese import ebonite material.
In the course of 2 years, and hundreds of prototypes, I have literally perfected two types of designs:
during this, i decided to make ebonite feeds as well, which is a real challenge (even for big manufacturers)
after painstaking work and research, I succeeded in making ebonite feed that functions like a plastic feed, although it is made from ebonite.
what i mean by that is, I machined ebonite feed, with a plastic feed design, which is very complex and difficult to do in ebonite.
internally, my ebonite feed has 5 turns of air / inkflow (compared to aurora ebonite feed, 1 turn)
this was done to make it more stable against overflow.
after that, i decided to make nib from scratch. no machines, no designs.
this was very difficult to do, with little resource and information.
but after painstaking work and research, I came up with my own manufacturing machines and process, that guarantees super high precision and quality.
at first, I started selling in South Korea, only.
but i wanted to share with the world, what i have created.
here are some of the pictures.
this is the nib, made from argentium silver 935.
it's got good flexibility, like a spring.
also, the slit is nearly always super high precision as can be seen below
This is my home built ebonite feed (left), aurora ebonite feed (right)
you can see the 5 turns of ink/air flow, like a modern plastic feed (with ebonite feed)
it is very very intricately machined.
here are Two of my fountainpen designs:
Eureka V8.3 Symmetry
it shares 1 thread with both cap and barrel, to increase cap lip thickness(strong design) and reduce the bump between grip and barrel.
there is near 0 slop between threads, so very very high precision and high concentricity between parts.
the barrel will not unfasten when opening and closing the cap.
thread is double start
this pen can be used as eyedropper, without use of silicone grease. the seal happens before thread part.
this design is even bigger than 149.
the cap is postable very stably(matching angled taper fit)
thread tripple thread.
You can see my development process in my blog:
also, this is the link to my newly born store: (i will remove this if there is a problem, please let me know) currently only available to US only (ebay doesn't allow me, as i am a new seller)
Currenly, i am working on my website. will revise this when done!
this is a simple video review i made:
currently, i have mastered the technique of Perfect Urushi coating.
soon, i will be done with my cleanroom for urushi coating, and also sell products with urushi coating.
also, i am developing my own "!" shaped gold plated Clip. this may take a while.
thank you guys for your attention.
I hope I can deliver a new kind of products, at very reasonable price.
Founder of EUREKA fountain pen shop
David (A.K.A. The Fountainpen Researcher (in S.korea))
Edited by dovidu, 02 October 2019 - 19:36.