● R&D Log174 eureka's ultimate urushi techinique ("chaos") developed eureka's ultimate urushi techinique ("chaos") has just been developed. while realizing chaos technique, a near perfect finishing is achieved as well. infinite pattern and color scheme will unfold, from now on. new types of urushi technique under development aside from traditional solid color tamenuri methods, new technique are under development the new techniques shows the limitless possibilities of the urushi laquer. the true beauty of urushi laquer is about to unfold. teflon grip protector, research finished when opening and closing the pen, the grip frontal area and inner cap area inevitably cause friction. this is especially noticeable for vintage grip style designs. below is 1st gen eureka grip design, which is loved by many. however, as users continue to use it frequently, severe scratching is inevitable. this is aurora 88. grip design : vintage style much scratching and dulling is observed, @ f.. parker duofold international retipping (part 2) this post is part 2 of "parker duofold international retipping" after welding, i proceeded with the slitting. this is even more difficult than welding. from the previous post, one can see the extra gold weld material @ the right tine has been equally removed. this was quite difficult process. also, from the below photo, it can be seen that the frontal part of the nib has been repolished, while n.. parker duofold international retipping (part 1) this is part 1 of the parker duofold international retipping. a new phenomenon was observed, which wasn't previously noticed! this is right before welding the nib, after a bit of grinding work to remove the iridium. left tine was thicker than the right, probably due to welding/slitting error from manufacturer. from this photo, the right tight has a bit more gold material, as a result of grinding.. 8 urushi colors developed orange yellow mint green mandarin white (bright beige) magenta red light green urushi polishing technique, much improved compared to previous technique... below figure is an estimation based on feel and observation. unfortunately, i don't have the scientific/precision equipments to do that. 1) surface smoothness improved by 2~3x (observation under microscope) -micro bumps are no longer present 2) final polishing improved by 3~4x (observation under microscope) -even the most difficult area to polish, are now equall.. nib overall shape improved through personal research #1 --> not enough bending amount, thought to be an effect of "spring-back" phenomenon. #2 --> V-bending phenomenon @ skyblue dot, thought to be inevitable. so far, #1, 2 was wrongly thought to be a consequential result of bending a springy sheet material. increasing press pressure by 10x improved overall shape. especially, improving #1 was vital, because when the nib is slitted, a deformation oc.. raden tamenuri challenge started! this is my first time dealing with raden tamenuri urushi technique. this is deemed to be one of the most challenging urushi works. for the shells, I decided to use smaller particles, instead of larger ones. i believe this has many advantages over larger particles. even the tiniest shell particles will be used, to provide "mechanical interlocking properties" for urushi. like concrete, cement alon.. raden urushi (na-jeon) technique research raden urushi will be done within this week, research is current ongoing, to achieve a mass produceable, consistent & durable, raden urushi technique. test will be done within this week, and if things go well, its process will be applied to all currently made pieces. that includes custom b&c, as well as fountain pens. various colors of sea shells will be applied something like this, below is just.. dodecagon symmetry v1.1 upgraded from v1.0: 1) design easier to urushi coat 2) end portions rounded to facilitate production 3) cleaner angle cut 4) grip shared with symmetry v9.2 5) grip front part more rounded (*vintage/aurora style grip design is prone to scratches when opening and closing cap, a unfavorable design for urushi coating) (below grip is designed to reduce scratching when opening and closing cap) 6) grip.. edson & visconti nib retipping (part 2) retipping completed for: edson & visconti nib! check part1 for what it looked like before retipping work :https://eurekafp.com/257 edson & visconti nib retipping (part 1) i've received two exotic nibs. one is 18K edson, the other is visconti palladium 23K both nibs are in bad condition. edson barely has a tip, visconti doesn't have any. visconti palladium 23K may be a challenge, as it is very exotic material. this is before the repair state: edson: visconti aside from the exotic shape of edson, welding was straight forward. palladium 23K required much more energy.. MontBlanc 146 Retipping the pen owner Kang (from S.Korea), sent me this pen. as matter of fact, this is the second time i received it. first time was a year ago, and i was not confident enough to retip the nib. however, a lot has happened since then, and I have obtained higher skills regarding nib fabrication. after a year or so, i had much more proficiency in following categories: -welding -slitting -nib smoothing / p.. Urushi technique V5.0 developed ! urushi technique v5.0 has been developed! currently many different colors are prepared. urushi coating will happen very soon. compared to V4.0 process... 1. durability improved by at least 10x, compared to v4.0 (special surface treatment to ebonite to faciliate absorption of the urushi / higher quality refined urushi laquer used than previous) 2. compared to v4.0, special surface treatment enhan.. urushi technique V5.0 (soon to be developed) Good news everyone! Currently urushi technique V5.0 is being developed. all current reservations and future ebonites will be finished with this technique. for the current reservations coated with V4.0 urushi technique, the urushi layer will be stripped to the base material, and they will receive newer surface treatment that will pefectly absorb the urushi from V5.0 urushi technique. Advantages o.. Walnut/Hardmaple urushi Cross pen rest upgraded. thanks to R&D, Mass production is soon to be started. A Major speed & quality improvement in the sanding process, as well as urushi coating process will enable much higher yield production. the price will be much lowered as well. the below photos show the urushi coating (1st layer, black urushi) more urushi will be applied the close most of the pores, followed by a final original urushi color. Faceted B & C Machining Process Has been Upgraded Compared to previous process, the end portion is cleanly cut, without vibration. Also, Various angles are now possible. in addition "Screw" style can also be done, and will be created in the future. the biggest improvement is the production speed. now custom B&C for century, gathered, duofold, etc. can also be done, as well as the symmetry models. Platinum-Silver Nib, First One Made, Through Research And Study. IT's been a while since, i began using platinum material to fortify the sterling/argentium nibs. it's been quite a journey, but still not finished yet. today, i created my first platinum silver nib, an improvement from argentium silver nib. it has superior scratch resistance and tarnish resistance in terms of tarnish resistance, argentium silver did better job than sterling, but still not satisf.. Dangers of working with Uncured Urushi ! Urushi is one of the strongest allergy inducing material. working with urushi always has the potential to cause this allergy. Urushi allergy will last 15~30+ days, and that's under good care. only liquid state urushi is poisonous, dried state, not so. not so sure about sanded urushi from dried state. from what i've heard, sanded urushi from dried state is almost non-poisonous, if it is very old... New Silver Alloy Developed (AuAg) New silver alloy has been developed as an alternative to PtAg alloy. It is possible to make PtAg alloy based nib. however, through personal research it has been revealed, that the addition of platinum increases brittleness of the entire alloy. due to this nature, for every 10 nibs produced, half of them failed do to cracking, during manufacturing process. the rest lucky ones did not exhibit any .. Platinum Silver Alloy has been developed, for nib material Progress in nib material research! Platinum Silver alloy has been developed, as an improvement over Argentium silver. this material is superior than Argentium silver, in all aspects. theoretical advantages... 1. scratch resistance; much harder material than argentium silver 2. tarnish resistance; far beyond argentium's tarnish resistance 3. superior flexibility and memory ◆Eurekafp.com ◆Email: b.. 3 Slotted "French Bread" Pen Rest This is "Master Original" slots precision angle machined, for best pen rest angle. middle slot is slightly less deep than the others. ◆Eurekafp.com ◆Email: beatmaster90@naver.com ◆Instagram: MechGyver_Eureka ◆twitter.com/PenEureka ◆youtube.com/c/MechGyver ◆fountainpennetwork.com/forum/user/147641-the-fountainpen-researcher/ ◆blog.naver.com/beatmaster90 ◆facebook.com/profile.php?id=10005 Platinum Gathered installed on Gold Deco Tamenuri (GDT) barrel and cap (+prototype urushi walnut pen rest) this is the urushi walnut pen rest, after 2 coats of urushi. gold deco tamenuri will be done on this as well, as a prototype. Gold deco tamenuri is finally done for the platinum gathered! what started as a prototype actually turned out quite nicely! ◆Eurekafp.com ◆Email: beatmaster90@naver.com ◆Instagram: MechGyver_Eureka ◆twitter.com/PenEureka ◆youtube.com/c/MechGyver ◆fountainpennetwork.com/fo.. gold tamenuri on different colors! gold tamenuri on different colors! (cyan, dark red, beige) on top of this, regular urushi will be applied, so its final result will be of different color! obviously needs more gold on this, but shown as example B&C for century and gathered is almost ready! Gold(24K) decoration technique acquired Tamenuri + gold decoration brighter gold colors need urushi coating on them, haven't done yet. darker gold colors are the ones with urushi coating on top, needs a few more coating. this requires high concentration, and patience... Reduced Fragmentaion technique Fragmentaion technique ◆Eurekafp.com ◆Email: beatmaster90@naver.com ◆Instagram: MechGyver_Eureka ◆twitter.com/PenEureka ◆youtube.com/c/M.. Symmetry V9.1 grip design changed from V9.0 improved scratch resistance improved ergonomics ◆Eurekafp.com ◆Email: beatmaster90@naver.com ◆Instagram: MechGyver_Eureka ◆twitter.com/PenEureka ◆youtube.com/c/MechGyver ◆fountainpennetwork.com/forum/user/147641-the-fountainpen-researcher/ ◆blog.naver.com/beatmaster90 ◆facebook.com/profile.php?id=10005 7K Rose Gold nib developed. A cost effective nib developed, as an upgrade to argentium nib. ◆Eurekafp.com ◆Email: beatmaster90@naver.com ◆Instagram: MechGyver_Eureka ◆twitter.com/PenEureka ◆youtube.com/c/MechGyver ◆fountainpennetwork.com/forum/user/147641-the-fountainpen-researcher/ ◆blog.naver.com/beatmaster90 ◆facebook.com/profile.php?id=10005 Eureka V9.0 Symmetry i've designed and completed a new pen: Eureka Symmetry V9.0 it's a continuation from the version V8.x below is an example with #5 omas gold nibs / pre-urushi finish usually #6 nib size is used, but #5 can be used as well, by increasing the #5 size to #6 (additional work needed) 1) thickness increased from 15mm to 16mm 2) thickness increased because, cap-grip-barrel thread sharing is not used. 3).. (3G V2) Harder type of argentium nib developed. Previous types were softer, due to finer frontal nib shape. this type, the nib is firmer. I am expecting this design will be even more durable than previous version. ◆Eurekafp.com ◆Email: beatmaster90@naver.com ◆Instagram: MechGyver_Eureka ◆twitter.com/PenEureka ◆youtube.com/c/MechGyver ◆fountainpennetwork.com/forum/user/147641-the-fountainpen-researcher/ ◆blog.naver.com/beatmaster90 ◆facebook.c.. 이전 1 2 3 4 5 6 다음
