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Thread: Fastening sheer plank to inwhale

  1. #1
    Join Date
    Dec 2012
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    Default Fastening sheer plank to inwhale

    I'm restoring an 18' lapstrake double ender and would like your opinion on whether to use silicon bronze ring shank nails or square cut nails from Faering Design to attach the sheer plank to the inwhale. This boat was built in 1969 in Norway, and at that time they used square cut nails, but was wondering if the ring shank would be better.

  2. #2
    Join Date
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    Walney, near Cumbria UK
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    Default Re: Fastening sheer plank to inwhale

    Quote Originally Posted by tomwil View Post
    I'm restoring an 18' lapstrake double ender and would like your opinion on whether to use silicon bronze ring shank nails or square cut nails from Faering Design to attach the sheer plank to the inwhale. This boat was built in 1969 in Norway, and at that time they used square cut nails, but was wondering if the ring shank would be better.
    You can increase the grip of square boat nails by twisting them.
    Ring barb nails are OK if you hate the person who may have to repair the shear/inwale after you.
    They are an absolute PITA to take out.
    It really is quite difficult to build an ugly wooden boat.

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  3. #3
    Join Date
    Nov 2004
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    Default Re: Fastening sheer plank to inwhale

    Even worse than Nick's comment is if you are unlucky enough to bend a ring shank nail prior to fully driving it home!! They are very nasty to remove! Squre cut nails are a safer choice. If possible they can be clinched or riveted over a copper rove or washer and offer a very strong joining. If roves are used, they should be finished with a dapping die to smooth over the edges of the peen.
    Jay

  4. #4
    Join Date
    Jul 2000
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    Default Re: Fastening sheer plank to inwhale

    Between the two I would also go square cut.

  5. #5
    Join Date
    Nov 2011
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    5,340

    Default Re: Fastening sheer plank to inwhale

    Between the 2 I'd go for copper clinch nails.

    Otherwise I'd just glue it. Are you replacing it because water trapped between the layers rotted the rail and the top edge of the plank?

  6. #6
    Join Date
    Dec 2012
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    Staten Island, NY
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    Default Re: Fastening sheer plank to inwhale

    Quote Originally Posted by Gib Etheridge View Post
    Between the 2 I'd go for copper clinch nails.

    Otherwise I'd just glue it. Are you replacing it because water trapped between the layers rotted the rail and the top edge of the plank?
    Hey guys thanks for all the info. The tapping die sounds like a good trick to smooth the rivets. Found this boat a few years ago, but now that I'm retired I can finally get around to fixing it. You can look at the boat on a previous thread, (Snekker Find). I will probably use a combination of rivets and square nails. I didn't want to use all rivets because I think it would look too much. Will use rivets where the ribs line up, and nails in between. Will have to counter sink in order to attach my rub rail, For my rub rail I have 1" by 1 3/4" by 20' piece of ipe wood. I know this is very stiff but hard wood, and will have to steam it to get it to bend around the shear strake. I will probably attach it the same way, and maybe bung it so no fasteners show. Don't know yet. All suggestions are very welcome. And yes , the rails and the shear plank were rotted. Will show you more pictures when I get a chance.

  7. #7
    Join Date
    Nov 2011
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    Default Re: Fastening sheer plank to inwhale

    " And yes , the rails and the shear plank were rotted."

    That's one of the reasons I bed everything in either Sika 291 or epoxy. Just a hint.

  8. #8
    Join Date
    Aug 2009
    Location
    Olympia, WA, USA
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    Default Re: Fastening sheer plank to inwhale

    For my rub rail I have 1" by 1 3/4" by 20' piece of ipe wood. I know this is very stiff but hard wood, and will have to steam it to get it to bend around the shear strake.
    Yumpin' Yehosephat! That'll be a job! Does ipé even take to steaming? Does it bend at all? Be sure to post photos --or even better, video, so we can enjoy your, ahem, vocabulary.

    That said, I'll second what Nick said about ring nails. Only use them if you preemptively hate the next guy to work on the boat.

    Alex

  9. #9
    Join Date
    Apr 2010
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    South Australia and Tasmania
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    15,258

    Default Re: Fastening sheer plank to inwhale

    Square copper nails riveted over copper roves looks best, and is strongest.

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