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● R&D Log174

A surprise while polishing a Sailor 21K nib A while ago, I acquired a used sailor pen with 21K nib.there was a tiny scratch below the sailor logo (gold area), so today I attempted to polish that. As I started polishing, very soon I realized the gold color getting lighter.to my surprise the gold color was gold plating, not the 21K gold itself. so I decided to get rid of the gold plating only.But I was clumsy and some rhodium plating was re..
Slim Asymmetry Prototype Completed Hello, this is Fountain Pen Researcher (Eureka admin).Today, I completed the slim asymmetrical prototype.After completing the prototype, currently actual use test is taking place.After some inial testing, I immediately found some problems that needs improvement.1) When I first tried to fill the ink,the ink did not fill in so well, so I learned that it can only be filled with a syringe (efficient..
Slim Asymmetry under development (Barrel) Hello again,Today's R&D log is about Slim Asymmetry (Barrel)below is still a prototype and more perfection is required.however, the plug and barrel components so far seems okay. next, I will work on developing Faceted cap.It will be quite different from my previous works.the cap may be 12 or 16 angles.the plug component's got 16 grooves, so I might go with 16 facets. * O-ring color could either ..
Silcone Plugs are now available for the ultem cartridge There was a suggestion from a Eureka user."Could there be a method to plug the cartrige, so ink-filled cartridges can be sealed?"This thought actually occurred to be as well, but to achieve this function mechanically, an additional thread must be machined along with a machined Lid.This was more complicated than I realized. A simple method was to use a silicone plug that will be compatible with t..
Slim Asymmetry under development (Plug) currently the slim asymmetry is being developed, and will take quite a while.at the moment the plug component is nearing development completion, although still perfecting it at the moment.the plug component is quite challenging to develop due to its elongated shape and delicate individual grooving. Slim Asymmetry will be developed for #6 nibs.since it is slimmer than standard size, #5 nibs can b..
Ebonite Feed 5G V4 developed Ebonite Feed 5G V4 has been developed although very stable, It is possible that some of the v3 might be not juicy enough. the challenge was, if I increased the flow higher, the feeder could become unstable. overflowing could occur if ink flow was increased higher via modifying the ink flow valves. through countless trial and error, I found that the valve(s) could be modified in a specific way. t..
In-House Eureka Platinum (PT) 14K / 18K nib development initiated In-House Eureka Platinum (PT) 14K / 18K nib development initiated. Through R&D I've acquired technologies / know-hows to develop stable PT alloys. I will do a complete in-house development, including melting and alloying the base material (platinum). since Platinum (PT) nibs are more difficult to develop than Gold (AU) nibs (1700~2000C is required to create stable PT alloys), successful developm..
Reusable Ultem Ink Cartridge developed Reusable Ultem Ink Cartridge has been developed ! So far, the only ink storage options were: Pilot Con-70, Con-40, or eye-dropper style.There has been some feedback regarding ink seeping out between converter / grip section.It is still not 100% clear, but I think the cause of this problem arrises from the injection moulding parting line, as can be seen below (* an O-ring was added to help overco..
Working on the Ultem ink cartridge Currently we are working on / producing the Ultem ink cartridge.the main part of the cartridge has been completed.The Ultem ink cartridge is made of two parts:1. cartridge body2. o-ring pusher below pictures show the cartridge without the o-ring pusher.the o-ring pusher threads onto the threaded area behind the red o-ring.by adjusting the o-ring pusher (not in the photo),the pushing force will b..
What is PEEK (CF30, Carbon Fiber 30%) ? What is PEEK (CF30, Carbon Fiber 30%) ? Peek CF30 (carbon fiber 30%) is literally the pinnacle of modern plastics.It has much better overall properties than regular unfilled PEEK (original tan).the advatages of peek (carbon fiber 30%) are as follows:- very high mechanical strength / properties- very high temperature resistance (short & continuous)- very good chemical resistance- biocompatible- v..
Dodecagon Diamond Symmetry PEEK (Carbon Fiber 30%) developed Dodecagon Diamond Symmetry PEEK (Carbon Fiber 30%, Germany) has been developed only a limited number of these are to be created, due to various factors. peek (carbon fiber 30%) is the pinnacle of modern plastics. the advatages of peek (carbon fiber 30%) are as follows: - very high mechanical strength / properties - very high temperature resistance - very good chemical resistance - biocompatible ..
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 roug..

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