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● R&D166

Precision Nib Remover developed There have been frequent requests regarding removal of the nib.since the ebonite feeder and nib is friction fitted, it is not easy to remove the nib.the tightness of the fit ensures stable setting of "the nib point alignment & nib slit thickness alignment."so, making the fit looser is not really a good solution.therefore, i decided to make a tool, so that eureka users can remove the nib easily a..
Solid Ebonite(Diamond) Pen Rest Developed Solid Ebonite(Diamond) Pen Rest has been developed.20mm solid ebonite rod was used (Japanese ebonite)overall shape is a continuous arc, with faceted surface. below photo shows penrest in freshly machined state. polishing process will be applied, for production models.I tried to apply polishing process,however, the result was even worse than freshly machined state.also the polishing process destr..
Solid Ebonite(Faceted) Pen Rest Developed Solid Ebonite(Faceted) Pen Rest has been developed.20mm solid ebonite rod was used (Japanese ebonite)overall shape is a continuous arc, with faceted surface. below photo shows penrest in freshly machined state.polishing process will be applied, for production models.
Solid Wooden Pen Rest Prototype developed Solid Wooden Pen Rest Prototype has been developedcurrently working on efficient production system. this particular one is maple (original high quality solid wood, not ply).planning to use various types of wood: Ash, redwood, walnut, ebony?) features:- all coners (8) / edges (12) are round machined- all surfaces (6) are smoothly ground- diamond precision-machined, pen groove accomodates up to 23..
Symmetry for Raden has been developed Symmetry for Raden (Urushi) has been developed.I will be making various kinds of limited edition raden themes.each theme will be produced in limited numbers, indicated at barrel end with raden.captop raden will be applied as well, so that it matches the theme of the pen. Following urushi technique / technology can be applied to this model: 1) Special Raden Urushi I : Continuous type (invisible m..
Dodecagon symmetry Peek Black has been developed Hello, this is Fountain Pen Research.Today, I completed the development of a Dodecagon cigar symmetry fountain pen with PEEK Black material.As with the Dodecagon diamond symmetry, the same PEEK black material was used.Quality grades are classified into A+, A, B+, B, C+, C, etc. (barrel & cap only, grip parts are mostly grade S).The cap length has been slightly reduced compared to the previous Do..
Micro-blasting treatment applied to Solid Gold nib Hello, this is Fountain Pen Research.To this date, I researched the microblasting process on Bock stainless steel nibs and successfully applied it.This effectively removed scratches from batch polishing process by Bock.This time, upon request, I applied the microblasting process to an 18K gold nib for the first time.Solid gold is a softer material than stainless steel, so it required more delica..
Solid Ebonite Pen rest & Nib Remover Tool Research Hello, this is Fountain Pen Research.This is research on solid ebonite penrest and nib removal tool. The previously developed pen rest was a cast-type using composite resin.This is the so-called "baguette" pen rest that many users are fond of. This time, I decided to make it with solid ebonite material.I plan to make a variety of shape types,1. Round 2. Square 3. Diamond shape There are two type..
Dodecagon Emerald Symmetry developed Dodecagon Emerald Symmetry has been developed. after completing the dodecagon diamond symmetry,I started working on the dodecagon emerald design. there are numerous emerald shaped rectangles on barrel & cap.due to the nature of the emerald design, angles are not sharp,therefore the shapes are not very sharp looking, like the diamond one.it is a subtle, yet defined design.
Dodecagon Diamond Cigar Symmetry PEEK (TAN) has been developed Hello, this is Fountain Pen Research. Today, I completed the Dodecagon Diamond Cigar Symmetry PEEK (TAN). Compared to South Korean-produced Black Peek (raw material: Germany), Peek tan Color is 100% German produced. ​Although peek tan color very rarely has dark spots, It showed much more consistent quality than Peek Black. Peek black pens are divided into grades: B, A, A+, and S (almost none). I..
typical cosmetic defects of Black PEEK Recently, I started making pens with Black PEEK. I purchased the rods from a South Korean manufacturer. they used German PEEK pellets to produce the rods. Despite my nearly perfect pen making process, when I started machining the material, I noticed several types of common cosmetic defects. 1. white dots (common) 2. tiny metalic dots (rare) 3. small cavities (common) the white dots are the most ..
Bock two-tone engraved nib surface treatment test I've recently experimented with surface treatment with bock nib. I've found some new things out 1. engraved features deepens2. hammered texturing seen when magnified (can be altered)3. the slit is affected is well, so i need to take extra care(below I just did it without care, because I didn't know)   original (before treatment)lots of scratches can be seen,the entire nib is full of scratches, a..
Dodecagon diamond cigar symmetry developed (PEEK Black) Dodecagon diamond cigar symmetry has been developed (PEEK Black). changes:1. barrel drill depth increased by 3mm (for reducing Con-70 button interference @ end)2. precision Barrel & Cap angle allignment ( ±0.001mm precision for proper angle positioning)3. below pen is non-engraved captop version (engraved ones will be produced as well, although this will take time)*some people wanted non-engrave..
Dodecagon diamond cigar symmetry barrel developed (PEEK Black) Dodecagon diamond cigar symmetry barrel has developed (PEEK Black) it was my first time machining with the peek black material.my first impression is "I sort of experienced hell".although a bit less now, still feeling a bit of burden just by looking at it. well, things have stabilized now, although not perfect.there's still room for improvement, I will keep trying... I will soon complete cap as ..
PEEK (Black) 8 types of grip developed PEEK (Black) 8 types of grip have been developed.There were some difficulties, because it was first time handling the new material.however, i was able to overcome them through hard work. now i will move on to developing diamond cigar symmetry (peek tan).thank you. from left:1. one-piece2. one-piece thick arc3. shift arc4. super grip fine5. full arc pipe6. hourglass short7. hourglass arc8. vintag..
difference in color between PEEK Black and conventional black resin Hello, this is Fountain Pen Research.This is the color difference between PEEK black vs conventional black resin (general-purpose plastic such as PP, acrylic (plexiglass), ABS, PC, etc.).Unlike the black color of regular pastics that usually comes to mind when thinking of black,I found that the PEEK black was different.I didn't notice when it was in rod form (unmachined).As I machined the materi..
PEEK (Black) grip section 8 types development inititated Hello, this is Fountain Pen Researcher.While developing PEEK (tan) and Ultem grips,I decided to try the PEEK black material.Although the material color is black,It is somewhat unusual in that it is silvery black. Since the design of the grip section is nib-housingless type,Precision is very important.Normally, 0.01mm precision is optimal.0.02mm precision in the minus direction is not acceptible...
Ultem grip sections (8 types) developed. Ultem grip section (8 types) have been developed. I wanted to develop 14 types like Peek, butDue to a shortage of materials, only 8 types were selected and developed.Ultem is a transparent material so you can see the inside.It was more difficult than usual, because internal areas must be machined as clean as possible.Due to the transparent nature of the material, you can see,Depth at which the n..
Ebonite Feed compatible Ultem grip section, development initiated Following the last 14 types of peak grip parts,I also started developing the Ultem grip section (ebonite feeder compatible).Because of limited materials this time,I will limit the types to less than 10.The grip part below is unpolished.This is how it looks like without ink.  Below is what it looks like after it's filled.I think the internal appearance will change over time,but this is roughly ho..
What is PEEK ? (Material) PEEK is used in Semiconductor equipments, medical devices, and extreme situations where all other general plastics fail. PEEK is a super engineering plastic, with the following characteristics: 1) superb chemical resistance (not affected by Acids, alcohol, acetone, and other harsh chemicals) 2) high temperature resistance (max continuous use 260C) (general plastics will get distorted even at Sub..
No. 1~14 PEEK Grip sections Development Completed ! No. 1~14 PEEK Grip sections Development Completed ! these are ebonite feeder (11 types) compatible grip sections11+ different kinds of nibs can be installed if matching ebonite feeder is used.Con70 / 40 / eyedropper compatiblecompatible with all pen models, developed since 2023.there may be some variation of color difference with existing models(PEEK manufacturer told me, PEEK color varies a bit..
No. 10~12 PEEK Grip sections have been developed 10. Vintage Taper 11. Vintage Arc 12. Pipe
No. 7~9 PEEK Grip sections have been developed 7. One-Piece 8. Shift Arc 9. Hourglass Short
Sealing of Con-70 has been enhanced by using an O-ring there has been several feedbacks regarding ink leak @ Con-70 & grip section end. most of these feedbacks were solved by following my instruction tutorials regarding con-70. so, most of the time the leaking is due to not following proper manual instructions. however, I wanted an additional sealing protection. so, for a while i've been doing research regarding this. and... today morning I had Eure..
No. 4~6 PEEK Grip sections have been developed 4. Full Arc Pipe 5. Hourglass Arc 6. Shift
No. 1~3 PEEK Grip sections have been developed No. 1~3 PEEK/ULTEM Grip sections have been developed 1. Full Arc2. One-Piece Thick Arc3. super grip fine
13 types of grip sections development for PEEK/ULTEM pens I just started the development of 13 types of grip sections, for PEEK/ULTEM fountain pens. i started off with "One-Piece Thick Arc" this will take quite a while, because these designs are all thicker than Urushi grip (13 types). so i am starting everything over again. in the end, it will be worthwhile though...
O-ring related research for eureka pens there's has been a feedback regarding ultem grip section when charging ink, some bleeding happens. so far, periodic cleaning is the only way deal with this, or just ignore it. i could install oring @ inside wall of the grip section, like some brands. however, this would sacrifice wall thickness by 30~50%. so this means i would have to give up the good long term durability. recently i discovered ..
All 13 types of urushi grip section development Completed ! All 13 types of urushi grip section development are completed.As of now, I will end the urushi grip development. grip section for Urushi is designed in such way,urushi process is easier & urushi durability is better,compared to a regular grip section design. also, urushi grip section is thinner than a regular one.because, urushi layers will make the part thicker.even thread size is carefully con..
"One-Piece Thick Arc" urushi grip section developed "One-Piece Thick Arc" urushi grip section has been developed. grip section for Urushi is designed in such way, urushi process is easier & urushi durability is better, compared to a regular grip section design. also, urushi grip section is thinner than a regular one. because, urushi layers will make the part thicker. even thread size is carefully considered for urushi process tolerance. I will be..

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