● R&D Log175 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.. 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 1.. 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 *** We no longer officially recognize Con-70 / Con-40 as converter for Eureka fountain pen models.We only officially accept Eureka ultem ink cartridge as ink storage device for our pens. 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 du.. 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.. "super grip fine" urushi grip section developed "super grip fine" 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 creati.. "super grip coarse" urushi grip section developed "super grip coarse" 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 crea.. "Vintage Thick" urushi grip section developed "Vintage Thick" 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 creat.. "Pipe" urushi grip section developed "Pipe" 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 creating about.. "One-Piece" urushi grip section developed "One-Piece" 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 creating .. "Vintage Arc" urushi grip section developed "Vintage 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 creatin.. "Vintage Taper" urushi grip section developed "Vintage Taper" 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 creat.. "Curvy Hourglass" urushi grip section developed "Curvy Hourglass" 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 cre.. "Short Hourglass" urushi grip section developed "Short Hourglass" 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 cre.. Dodecagon diamond cigar symmetry B & C (for urushi) developed Dodecagon diamond cigar symmetry Barrel & Cap (for urushi) has been developed. following is a basic feature of this part: 1. Urushi suitable thread tolerance applied 2. new thread 3D entry design (latest version) 3. Urushi suitable angle alignment applied 4. Urushi suitable ends design applied 5. Urushi suitable hole entry design applied Next model to work on is: Dodecagon ruby cigar symmetry & .. Dodecagon diamond cigar symmetry Barrel (for urushi) developed Dodecagon diamond cigar symmetry Barrel (for urushi) has been developed. following is a basic feature of this part: 1. Urushi suitable thread tolerance applied 2. new thread 3D entry design (latest version) 3. Urushi suitable angle alignment applied 4. Urushi suitable ends design applied 5. Urushi suitable hole entry design applied so far i created dodecagon in cigar (curved) form, in unibody st.. Dodecagon cigar symmetry for urushi developed Dodecagon cigar symmetry for urushi has been developed. following has been changed: 1. cap design a bit sharper than peek dodeca 2. Urushi suitable thread tolerance applied 3. thread 3D entry design optimized 4. Urushi suitable angle alignment applied 5. Urushi suitable ends design applied 6. Urushi suitable hole entry design applied * grip in the photo is there just for the photo. urushi compat.. Duofold international nib compatible ebonite feeder developed Duofold international nib compatible ebonite feeder has been developed. this feed is only compatible with grip sections developed for ebonite feeder. following has been adjusted to fit properly: 1. feed length 2. air channel adjusted to match heart hole position 3. nib groove amount adjusted 4. nib groove position and length adjusted 5. side slanted groove applied 6. nib frontal slant angle appl.. MontBlanc 146 nib compatible ebonite feeder developed MontBlanc 146 nib compatible ebonite feeder has been developed. this feed is only compatible with grip sections developed for ebonite feeder. following has been adjusted to fit properly: 1. feed length 2. air channel adjusted to match heart hole position 3. nib groove amount adjusted 4. nib groove position and length adjusted next feed to work on is for Parker duofold international 18K. Sailor 21K nib compatible ebonite feeder developed Sailor 21K nib (Progear) compatible ebonite feeder has been developed. this feed is only compatible with grip sections developed for ebonite feeder. following has been adjusted to fit Sailor 21K properly: 1. feed length 2. air channel adjusted to match heart hole position 3. nib groove amount adjusted 4. nib groove position and length adjusted next feed to work on is for Parker duofold internati.. Dodecagon cigar symmetry PEEK (Extreme Durability Test) Today i performed destructive durability test of the dodecagon symmetry peek. I was always wondering about the limits of the PEEK material. So, with the spare B grade parts, I performed a simple durability test. This is the test footage i used a regular metal hammer (the type used for driving nail). for the floor protection, I used a thick piece of wood. I am not sure if you can tell the amount .. M800 nib compatible ebonite feeder developed M800 nib compatible ebonite feeder has been developed. this feed is only compatible with grip sections developed for ebonite feeder. following has been adjusted to fit M800 feed properly: 1. feed length 2. air channel adjusted to match heart hole position 3. nib groove amount adjusted 4. nib groove position and length adjusted next feed to work on is for Sailor 21K. Omas nib compatible ebonite feeder developed Omas nib compatible ebonite feeder has been developed. this feed is only compatible with grip sections developed for ebonite feeder. following has been adjusted to fit aurora feed properly: 1. feed length 2. air channel adjusted to match heart hole position 3. nib groove amount adjusted 4. nib groove position and length adjusted next feed to work on is for Sailor 21K. 이전 1 2 3 4 5 6 다음
