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● R&D Log176

Solid Machined Titanium Nib prototyping (Research #4) Today I conducted actual machining of the titanium grade 5 alloy. I was a bit worried because on the internet there were comments warning about machining titanium.since titanium has poor heat conductivity, it will burn up the tool if parameter is not correct.Also, titanium has tendency to work harden, which is a headache. So, it was important for me to get the feeling of how the titanium reacts ..
Solid Machined Titanium Nib prototyping (Research #3) Hello, today I completed the prototype plan for the solid machined titanium nib.I completed the design and required manufacturing methods.In the second research post, I leaned towards non-through hole design,but after more research, I concluded that the through hole type is more suitable for manufacturing.1. A method to align the angle of the feeder is needed, so I designed certain part of the f..
Solid Machined Titanium Nib prototyping (Research #2) In the previous research log (#1), the prototype was through hole nib type.Today's prototyping focused on no hole nib type (blind hole) compared to through hole type, no hole type seems to have following advantages:1) various nib design is possible because one feed design is compatible with all of them.2) since the feeder is located internally problem of angular feed alignment is gone.3) feeder ..
Solid Machined Titanium Nib prototyping initiated Hello again, this is Eureka admin (The fountain pen researcher)Today I announce the initiation of solid machined titanium nib prototyping. Below photo shows my prototype pen, made when I was in college (around year 2010~2012).it was called "waterdrop pen"The pen was made from aluminum alloy.Since this was just a prototype pen, there were many limitations. there was no tipping, so the aluminum al..
Ebonite Symmetry for "advanced urushi techniques" developed Ebonite Symmetry for "advanced urushi techniques" has been developed.such model can be used for basic urushi techniques such as tamenuri.however, this type is especially suitable for applying advanced urushi techniques. some of the advanced urushi techniques are as follows:1. Raden2. Makie3. urushi inlay4. chinkin   below are examples of some of the advanced urushi techniques.please do note that..
Nib grind service initiated (for eureka fountain pens) Hello, this is Eureka admin (The fountain pen researcher) so far, especially for non-urushi fountain pens, only bock M nib were available.I avoided finer nibs such as EF / F, because I trusted M nib quality the most.because of this, other nib sizes were not available for purchase. however, recently I did some nib grind for some customers.Bock M nib is turned into different nib sizes, by nib grin..
Diamond Symmetry (Ultem) completed Development of diamond symmetry (ultem) has been completed.Recently I've been working on this project. some notes:1. Diamond machining precision improved2. Ring design added to end face of cap and barrel.This will be more resistant to scratches than plain flat surface. Currently working on the production of this model. Thank you.
Slim Asymmetry Ultem developed Hello dear Eureka usersSlim Asymmetry Ultem has been successfully developed.Material used: ULTEM (USA / GERMANY) Currently it is under production.Hexadecagon cap may not be possible due to some technical difficulties, but will give it a try.thank you.
Slim Asymmetry Development Completed Hello Dear Eureka Users,Slim Asymmetry Development has been completed This preculiar type of pen turned out to be more difficult to develop than anticipated.The design is quite different from my other models.The prime cause of this is due to the dimension of the material used.The restriction of material used, defined overall design features. although there were limitations, there are also advant..
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..

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