● R&D Log178 5th gen ebonite feed v2 developed Following has been changed: 1) frontal top portion thickness changed 2) external rib increased by 3 3) internal groove (top) increased by 3 A total of 159 cutting process used to complete this feed left: v2, right: v1 ebonite feed (5G) + CON-70 fitting test The following have been observed during the fit test: 1) compared to 4th gen ebonite feed, which used a screw type ink converter, the con-70 increased ink capacity by 3~4 times. 2) when filling the ink, i noticed i have to dip deeper into to the ink bottle to achieve stable ink fill. compared to 4th gen, the dip amount increased. i think this is due to the quick suction of the ink by Con-70, as .. 5th Gen Ebonite Feed developed Finally completed the 5th gen ebonite feed the following have been upgraded: 1) super precision attained with ebonite material 2) more complex internal (inside grip) structure 3) equal level of complexity as plastic feed 4) high precision fit of given nib, through 3D nib groove machining 5) high level of fit, even without heat setting 6) Con-70 converter compatible 7) stable eye dropper performa.. B & C for Urushi (new version) completed hello guys, new update for the new version of urushi pen development the following has been improved, compared to previous version: 1) internal & external thread is pretty much perfect now 2) the end point of internal & external thread is "escape type" previous type had a groove for thread tool escaping, which reduced strength/durability at that groove spot. 3) barrel and cap end contour more fl.. Dodecagon Cigar Symmetry (Ultem) Developed Today i completed the grip section for the dodecagon cigar symmetry (ultem) now, the project is complete. for the grip section, i wanted to do dodecagon as well. unfortunately, it was uncomfortable to write with, due to the large spacing of the angles. so i tried 24, 36 angles. overall 24 angle was best. the following has been aligned: 1) barrel, cap, grip angle aligned 2) bock nib unit, when in.. Dodecagon Symmetry "Cap" completed This time i completed the dodecagon symmetry ultem (cigar type). in the last post, i presented the dodecagon ultem barrel, which was quite hard to do. however, this time the difficulty was at least 2x. it was especially difficult for following reasons: 1. when closed the barrel and cap angle must line up accurately 2. there's three different ways the tripple thread engages when it closes. even w.. Asymmetry Diamond Dodecagon Cap developed Asymmetry Diamond Dodecagon Cap developed This was a bit ambitious project for me, because i have not ventured into multi-facet machining. the required precision and requirement was quite high, and took months of hard work to master. the multi-facet comprises of 408 small triangles. depending on the view angle, the reflection pattern will change. it requires great precision for all 408 triangles.. Dodecagon Symmetry "Cigar" Barrel completed So far, i could only make linear (rod) dodecagon. This was due to precision issues. the level of precision required is quite high, even for Rod dodecagon, for "Cigar" or Taper dodecagon even more precision is required. thanks to recent research, i successfully developed "Cigar" dodecagon barrel. This was my first time making parts from Ultem material (Germany, high quality) since it has a bit le.. eureka asymmetry diamond dodecagon cap fountainpen has been developed (protoype) below is prototype pen, actual production pen will be different production will begin soon! Diamond & Ruby machining process developed For a while, i've been researching for multi-facet precision machining. This is a highly complex process requiring utmost precision. ideally 0.01mm precision is required, however, this is very difficult because all the inaccuracies add up. so far, i've achieved 0.04mm precision. i think 0.1mm precision is okay for sale. now i am trying to achieve 0.01mm precision, although this is gonna take muc.. Asymmetry dodecagon cap developed new Dodecagon cap developed (ebonite material) new dodecagon cap has been developed in ebonite material.captop logo & side engravings applied.below sample has not been polished Prototype gen5 ebonite feed ink fill test (Con-70) I created a very basic gen 5 prototype feed, for ink fill test only airchannel is applied (some omitted) all other features not applied (rib, ink channel, etc.) this is the side view of the test feed air channel from converter is connected to the hole the hole is drilled to the center of the feed a long thin hole is drilled all the way to the aforementioned hole drilling thin-long hole is not ea.. Prototype drawing of 5th gen Ebonite Feed (research log 6/18/23) i will be developing my 5th gen ebonite feed. based on years of experience on my 4th gen ebonite feed, i have found some areas i can improve upon. 1. first consideration is feed diameter usually #6 nibs have 6mm diameter feed. in order to make ebonite feeder more stably with greater durability i've chosen 6.5mm, same as the 4th gen predecessor. the nib is designed for 6mm feed, but 0.5mm diamete.. New exotic materials to try... These are Super engineering plastics very high quality from germany, very expensive... looking forward to trying out these materials, although it will take much time... PEEK, Black PEEK, PEEK (glass fiber 40%) PEEK (carbon fiber 30%), PEEK (graphite-teflon), PEEK blue (medical grade), Ulterm (galssfiber / natural) "Arc Grip" type has been developed "Arc" grip type has been developed in PEEK material. so far, 3 types of grip designs are completed in PEEK material. 1. normal (taper) type 2. super grip type 3. arc type since an adequate amount of research is completed in grip section, i will move onto further developing other parts of the pen. "Super Grip" type has been developed "Super Grip" type has been developed in PEEK material 54 individual micro "protrusions" are precision-machined individually. these bulges fits between finger print ridges, enhancing anti-slip properties. different boundary lengths were tried for choosing best overall aesthetics. in the end i chose the one in the last picture. it seems quite adequate, not too excessive. in terms of performance, i.. Eureka Symmetry Model (PEEK material) new symmetry model has been successfully developed in PEEK material This is a fully precision-machined pen from solid peek rods. we only use the PEEK material imported from Germany (high quality) PEEK is a hyper-performance plastic (or super engineering plastic), that has following characteristics: 1) superb chemical resistance 2) high temperature resistance (max 260C) 3) superb strength, wear r.. Eureka Symmetry Model developed new symmetry model has been developedMaterial: ebonite, special plastics etc.design not suitable for urushi coating (a different model will be created adequate for urushi coating in the future) below photo shows a sample of this model (unpolished state, a further polishing process will be applied) comparison to prior symmetry modeloverall thickness and length reduced(cap size reduced, below phot.. Eureka ebonite feed 4G v4 (developed) while researching the adaptation for music nib, original feed seemed to lack the feeding capability. through research, the following has been discovered. by adding addtional top rib structure, the flow of feed increased by 2~3x easily. *the round grooves are for dual heart hole of music nib. from now on all eureka custom fountain pens will get this adaptation. for the owners of previous gen eure.. ebonite Captop for #3776 century developed (Round) ebonite Captop for #3776 century developed (Flat) with the development of ebonite captop, now it is possible to do urushi coating on this type of pen, after proper surface treatment. captop ring has been removed to gurantee better urushi fit / finish compared to original captop. original captop is attached to the cap via a plastic rod that extends from the inside of the captop in the photo below, it only shows the broken area where the rod used.. The first prototype This is the first eureka prototype that started eureka fountain pen. recently, of the two ever created, i sent one to one of my avid user. the last one will be kept inside display, and will not be for sale. Relocating Factory... Production will be very limited for months Chingin technique developed Chingin technique has been developed. pure silver powder 99.9%, with urushi as binder. eureka chinkin v2 (test results) hello guys :) today i finished one of the designs with eureka chinkin v2 technique. still a long way to go, and much failures. however, improvements are gradually taking place. this time i made a cap with yellow tamenuri, with blossom grooves (filled with silver urushi) unlike the usual chinkin, the grooves are almost completely filled, so the surface is flat. a lot of filling is required, so pu.. black widow tamenuri urushi developed hello guys, this is the fountainpen researcher. today i completed a unique type of urushi that i recently tried. i call it black widow tamenuri urushi technique the pattern beneath the clear top urushi layer reminds me of a continual pattern of black widow spider' pattern. on top of the pattern, a clear top urushi has been applied. this is one of the most difficult urushi teniques i use. it is e.. initial chaos urushi technique done again! today i just finished one of my initial chaos urushi pens. initial chaos urushi is technically difficult, so i've been looking other ways to replicate the same design. however, of numerous techniques to mimic the looks, none of them worked... so, i am at a loss to what to do. i guess i have to revive the devilsh technique. currently, i am working on a way to make the process a bit easier... hope.. Eureka ebonite feed 4G v3 *This feed was developed about a couple of weeks ago, so all the shipped pens recently are equipped with this feed. Upgraded from Eureka ebonite feed 4G v2, upgraded features of the 4G v3: - more slanted cut towards the front - air channel modded for maximum flow while achieving high stability - ink channel and air channel machined deeper - frontal area higher precision, allowing perfect horizon.. reduced type Chaos urushi developed so far, chaos urushi technique showed interesting result. the patterns and colors were nothing i've ever seen before. also, the durability of the urushi far surpassed solid color / tamenuri urushi. this durability factor has been proven dozens of times, when i did sanding work on them. although some users enjoy its super uniqueness, others suggested it was a bit overwhelming for their taste. the.. 이전 1 2 3 4 5 6 다음
