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Thread: Skin on Frame in the UK?

  1. #36
    Join Date
    Jul 2017
    Location
    Ely, UK
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    9

    Default Re: Skin on Frame in the UK?

    Perhaps a bit primitive to what you are thinking, but this is my skin on frame canoe. The build report has lost its photos because of the photobucket bollocks.

    http://www.songofthepaddle.co.uk/for...-another-canoe!

    l- 12' skin on frame from pbk design.jpg

    Sam

  2. #37
    Join Date
    May 2009
    Location
    Fort Worth, Texas, USA
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    2,099

    Default Re: Skin on Frame in the UK?

    Looks good to me.
    Nothing primitive I can see.

  3. #38
    Join Date
    Jun 2017
    Location
    East Anglia, UK
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    11

    Default Re: Skin on Frame in the UK?

    That's really pretty! Can you give a few more details on the materials? Where did you source the timber, skin details, what's the paint?
    Did you just take the PBK51 and shrink it lengthwise or alter the forms?
    Thanks!
    Last edited by Little_Rascal; 07-30-2018 at 03:49 AM.

  4. #39
    Join Date
    Jul 2017
    Location
    Ely, UK
    Posts
    9

    Default Re: Skin on Frame in the UK?

    Hi Little Rascal

    If I remember right, I imagine I would have just taken out a number of the middle frames. Too busy at present with another canoe to check at present. Being a cheapskate I would have got the cheapest 9mm exterior ply - possibly ridgeons. The softwood stringers were probably from there too, and I would have got the ash for ribs from AC Timber in Witchford. The canvas was I think bought from Whaleys in Bradford and extra waterproofing was added with a tube of screwfix silicone sealant, diluted with white spirit then painted on. Black on the timber is wood stain / preservative probably from Wilkinsons.
    Here is a link to the photobucket album.
    http://s267.photobucket.com/user/sgbrowning/library/pbk

    Where in East Anglia are you? If not too far away we could arrange for you to paddle it.

    Sam

  5. #40
    Join Date
    Jun 2017
    Location
    East Anglia, UK
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    11

    Default Re: Skin on Frame in the UK?

    Hi Sam,

    Thanks for the link and info - I hadn't found AC Timber.
    I'm in Peterborough so only spitting distance

    Cheers,
    Jon

  6. #41
    Join Date
    Jun 2017
    Location
    East Anglia, UK
    Posts
    11

    Default Re: Skin on Frame in the UK?

    Sam, I noticed you 'glued and screwed' - can you remember what glue you used at all?

    Cheers,
    Jon

  7. #42
    Join Date
    Oct 2005
    Location
    The Netherlands
    Posts
    529

    Default Re: Skin on Frame in the UK?

    Has anybody experience with dacron, sailcloth? Mind you, I COULD NOT MAKE IT SHRINK. Most sailmakers carry a grade called 'Seconds' that is 40 % of the original price, so between 3 and 6 euro a meter on a 1,4 wide roll (for repair work mostly). That way you could use 15 oz stuff and I think 4 oz aircraft cloth is very light and not available here.

  8. #43
    Join Date
    May 2009
    Location
    Fort Worth, Texas, USA
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    2,099

    Default Re: Skin on Frame in the UK?

    Sail cloth has already been heat shrunk.
    And coated with resin, to make sure it does not change shape.

    If you are OK with wrinkles and overlaps to get it to fit, it will work fine.

    Dacron in a cloth store is also heat set (shrunk).

    If you have any question, do a test on a small section. The shrinkage when just lying on the table is really dramatic.

  9. #44
    Join Date
    Jul 2017
    Location
    Ely, UK
    Posts
    9

    Default Re: Skin on Frame in the UK?

    Quote Originally Posted by Little_Rascal View Post
    Sam, I noticed you 'glued and screwed' - can you remember what glue you used at all?

    Cheers,
    Jon
    Probably just used waterproof PVA: I was definitely low tech following the Percy Blanford style. I suppose he would have recommended cascamite but PVA is easier!
    Sam

  10. #45
    Join Date
    Jun 2017
    Location
    East Anglia, UK
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    11

    Default Re: Skin on Frame in the UK?

    Are there any viable alternatives to epoxy for sealing plywood end grain?

  11. #46
    Join Date
    May 2009
    Location
    Fort Worth, Texas, USA
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    Default Re: Skin on Frame in the UK?

    Sure - just paint it heavily.

    It won't work as well, but that is the choice you have.

    It might work for quite a while.

    I have heard of some people referring to SOF as a "Biodegradable" construction. Meaning most don't last real long.
    Might depend upon how well you do everything else on the boat, if you put it away wet, and if you keep it covered.

  12. #47
    Join Date
    Jun 2017
    Location
    East Anglia, UK
    Posts
    11

    Default Re: Skin on Frame in the UK?

    Thanks Marc. I have tried using thinned PVA in the past but it wasn't much good. It is probably worth me using epoxy to make it last a year or two longer.

    I've just seen my interior design customer and it turns out the fabric they have is calico rather than canvas. It's rather softer than the sample of Duck from Wolfrin Textiles. Any thoughts on whether calico would work? I will do a shrink test and paint some of the sample at some point too.

  13. #48
    Join Date
    May 2009
    Location
    Fort Worth, Texas, USA
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    2,099

    Default Re: Skin on Frame in the UK?

    Personally, I have no idea what calico is made of.
    But polyester for sewing is all heat set, so that a dress or shirt, etc., does not change size in normal use. Wash, dry, iron.

    I didn't quite say what I meant about paint on edge grain.
    Paint will help longevity - can't predict how much, but there are some ply boats that have lasted a long time.
    Unfortunately, bulkheads in SOF are not accessible for maintenance.

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