{"data":{"make":{"id":"2130618","created":"2024-10-20T19:44:12.799620+00:00","edited":null,"deleted":null,"isMake":true,"printer":{"id":"620","name":"Prusa MK4","__typename":"PrinterTypeType"},"parent":null,"author":{"id":"1785678","handle":"victorsavu3_1785678","verified":false,"dateVerified":null,"publicUsername":"victorsavu3","avatarFilePath":"","badgesProfileLevel":{"profileLevel":7,"__typename":"BadgesProfileLevelType"},"__typename":"UserType"},"images":[{"id":"1951830","filePath":"media/comment_images/f0/ccbf89-7ddd-4473-9e40-1085e7c4013e/20241020_214159.jpg","rotation":0,"__typename":"CommentImageType"},{"id":"1951831","filePath":"media/comment_images/4e/b5e2e3-598e-4baa-90d0-55202c678a66/20241020_214145.jpg","rotation":0,"__typename":"CommentImageType"}],"mentions":[],"text":"Works great with a Jowo #6 nib unit","rating":5,"likesCount":1,"liked":null,"membershipAgeMonths":null,"membershipTier":null,"__typename":"PrintCommentType","model":{"id":"747037","slug":"jowo-6-fountain-pen","name":"Jowo #6 fountain pen","authorship":"author","club":false,"excludeCommercialUsage":false,"price":null,"eduProject":null,"ratingAvg":"5.0000000000","myRating":null,"ratingCount":4,"description":"

This is a fountain pen that uses a Jowo #6 nib unit & Standard International Cartridge/converter. You will have to purchase those separately. I recommend the Opus 88 units available from JetPens, but any Jowo #6 housing should work.

I have provided a clipless version of the cap with a nib shaped rollstop in addition to a clipped version. The clip is installed with one M2.5 flat head screw 6mm long such as McMaster-Carr part 92010A016

I like to chase the threads with a M7.5x0.5 tap. It helps if you're printing with an Ender 3. With a printer like the Bambu, when I tested it, no tap was needed.

Tough PLA works best as regular PLA can be brittle.

Print with a 0.4mm nozzle max. Adaptive layer height down to 0.1mm because there's fine detail on all of the parts. Your printer needs to be well-calibrated to print this accurately.

I like to run the calibration cube here before I run a set of pens to check my flow. https://www.printables.com/model/81314-flow-calibration-cube

Print all parts with the largest flat face down and use a brim on all except the clip. No support should be necessary.
Print them one at a time for the best result to reduce stringing. You will need to deburr/chamfer the bottom edge with a sharp knife or sandpaper just to ensure a proper fit and removal of the brim.

Because the print will still be somewhat porous and not seal as well as a traditional resin, I've found that Private Reserve Infinity Inks work best. Dipping the section to fill is not recommended since the section will absorb and stain. I prefer to syringe-fill converters or use cartridges.

This is a new model based on the design of my Fountain Pen Revolution design
https://www.printables.com/model/491415-fountain-pen-fpr-6-unit

UPDATE 2024-07-11: Added a cap without the rollstop because it didn't render well on some printers.

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Jowo #6 fountain pen

Jowo #6 fountain pen

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