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3D printed parts for JR - A collaborative project

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  • 06 Jul 2026 15:12
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    Reply # 13650202 on 13571501
    Anonymous member

    Exactly :-)
  • 06 Jul 2026 14:24
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    Reply # 13650182 on 13571501
    Anonymous member

    Ah, I get it now, the black webbing is tubular with the green line inside it. So I guess that starting anew, there could be a short piece of tubular webbing put onto the sheet span before splicing the eye. If there’s to be a bolt through the batten, this could also attach the sail flush with the leech, provided that there is a strong eye in the sail (which may not be the case with this particular sail).
  • 06 Jul 2026 14:05
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    Reply # 13650168 on 13650150
    Anonymous member
    Anonymous wrote:

    Paul & Frank,

    I don’t think I’ve fully understood - if there’s a spliced loop in the sheet span, couldn’t this go straight onto the bolt? Maybe you want to protect it against chafe, which would explain the black webbing loop, but what is the green line for? And how is the clew of the sail attached?

    Hi David,

    good points! The end plug design is a compromis between what would be ideal and what's worth changing on this existing (and working) rig of your design.

    Yes the spliced loop could go to the bolt, but that would've changed the length of the sheetlet by about 10cm and I wanted some chafe protection, hence the webbing around the green line. The green line basically forms the short loop, which connects the spliced loop to the 3D-printed part including the bolt.

    You are right, it would be a way cleaner installation if the spliced loop directly connects to the bolt, with the end batten plug being only a trumpet to reduce chafe.

    The sail of Frank's Bold is connected to the aft end of the battens by hooks riveted to the side. I don't like that too much, as this means the batten are protruding some centimeters beyond the leach. However, he didn't report any problems so far. If I would build a new one, I would also lead the line conmecting the sail to the batten into the trumpet of the end plug, enabling a flush mount of batten end to the leach.
  • 06 Jul 2026 12:37
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    Reply # 13650150 on 13571501
    Anonymous member

    Paul & Frank,

    I don’t think I’ve fully understood - if there’s a spliced loop in the sheet span, couldn’t this go straight onto the bolt? Maybe you want to protect it against chafe, which would explain the black webbing loop, but what is the green line for? And how is the clew of the sail attached?

    Last modified: 06 Jul 2026 13:08 | Anonymous member
  • 06 Jul 2026 10:23
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    Reply # 13650127 on 13571501
    Anonymous member

    Frederik, let me know if you want some, too. I would need the inner diameter and wall thickness of all of your battens ;-)

    Would be interesting for the front batten ends, also...
  • 05 Jul 2026 21:36
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    Reply # 13650005 on 13571501
    Anonymous member

    A small thing, but it makes us happy. An interesting solution.
  • 05 Jul 2026 12:52
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    Reply # 13649931 on 13571501
    Anonymous member

    Nice.

    and not so far away..
  • 04 Jul 2026 21:34
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    Reply # 13649869 on 13571501
    Anonymous member

    Hi,

    Frank S. has been around with his 'Bold', so we met up, had a good time and discussed a lot of junk rig related stuff. We figured that his battens would benefit from some end plugs...

    That said, the next days I used Solidworks to design some custom batten end plugs for him. My design is based on Alex T.'s and David T.'s designs, with an additional safety: if, by any chance, the printed part would fail and disintegrate, the line would still be attached to the batten end, as the loop goes around the bolt.

    Didn't take more than an hour before the design was finished and went to the SLA-printer (resin printer), and two hours later 7 sturdy end plugs were ready to be installed. Today was the day, and we installed one plug to see how it fits.

    I leave it to you, what do you say?


    Cheers

    Paul

    7 files
    Last modified: 05 Jul 2026 05:33 | Anonymous member
  • 29 Dec 2025 11:14
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    Reply # 13576701 on 13575662
    Anonymous member
    Anonymous wrote:

    Well, I looked at it, and it doesn’t seem to be sophisticated enough to produce high quality work. I’ll stay with Fusion for the time being. 

    You're probably right. I noticed that Dune3D appeared, supposedly a fork of Solvespace that was supposed to fix its shortcomings (specifically, the lack of phasing and rounding), but after installing it on my laptop with Linux Mint 22.2, I couldn't get it to run.

    Maybe it will become more user-friendly someday.


    Last modified: 29 Dec 2025 11:49 | Anonymous member
  • 23 Dec 2025 18:40
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    Reply # 13575666 on 13575635
    Anonymous member
    Mauro wrote:

    Hi David, 

    again congratulations for the ideas and thank you again for sharing!

    What do you think about adding a vertical hole (parallel to the leech) on the starboard side for Arne’s fun up preventer? 

    I have no opinion on this, never having rigged a FUP, and preferring to design rigs that don’t need one. But make a sketch, and I’ll see what I can do.
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