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  1. #1
    Join Date
    Jan 2012
    Location
    Perth, Australia
    Posts
    126

    Default Goat Island Skiff (yawl) build in Perth, West Oz

    G'day all, long time listener first time caller here. I purchased the plans for the GIS about a year ago, but have been unable to start thus far due to building a new house, work, second child etc. Anyway that ended today as I commenced work on my centreboard, and practised scarfing on my triton workbench (6:1 [10º] for staves etc). I'm using decking cedar (unsure of variety, sold as real cedar) at the moment, it looks a lot like yellow cedar(~30-40 grains to the inch) has a specific gravity of 420 kg m^3 (measured) a bit heavy I know but if I don't like it I can always replace it later. I'll probably use this timber to replace the Oregon in the plans, and paulownia instead of wrc (I've gotta order some from whitewood ).

    I intend building all the extra bits(board, rudder, masts and spars) prior to commencing hull work.

    Regards Dan


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  3. #2
    Join Date
    Jan 2012
    Location
    Perth, Australia
    Posts
    126

    Default Re: Goat Island Skiff (yawl) build in Perth, West Oz

    G'day again

    Here are some photos of my work thus far.
    The staves all lined up with glue (purbond)
    uploadfromtaptalk1356337311588.jpg

    Clamping set up
    uploadfromtaptalk1356337425169.jpg

    Weight on top to keep it all straight(about 100 kg)
    uploadfromtaptalk1356337503658.jpg

    #Note I've not yet glued in the leading and trailing edges (Tassie oak) yet as I stuffed up a cut and had to scarf up a length. I'll fit them once the scarf has gone off (and when I've cooled down)

    Dan


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  4. #3
    Join Date
    Aug 2010
    Location
    New Jersey, USA
    Posts
    767

    Default

    Welcome aboard Dan!

    Quote Originally Posted by Capturethebeer View Post
    I intend building all the extra bits(board, rudder, masts and spars) prior to commencing hull work.
    I took this approach and it worked well for me. It allows you to practice on small bits. You can also get multiple things accomplished simultaneously once your momentum is going. Then, as you start epoxy coating the large parts of the hull, you've got all these small assemblies available to make the most efficient use of the goo.

    Best of luck to you!
    Dave
    StorerBoat Builder, Sailor, Enthusiast
    Dave's GIS Chronicles | Dave's Lugs'l Chronicles | Dave's StorerBoat Forum Thread

  5. #4
    Join Date
    Nov 2010
    Location
    fremantle west australia
    Posts
    14

    Default western yawl

    Hi Dan
    Good choice
    Another Goat for the West.
    Have you got your ply yet?
    Where are you sourcing your Paulowina?
    Im in White Gum Valley.
    Wayne Poulsen
    "Billy Goat"

  6. #5
    Join Date
    Dec 2009
    Location
    Texas
    Posts
    319

    Default

    Glad to hear another yawl is being built. GIR was the first yawl GIS to be finished, but Clint Chase has made some very good improvements to the mast steps so be sure to check the latest on his website.

    Goat Island Skiff - Maine Boatbuilder + Repairer Wood + Plywood Boats Oarmakers Birdsmouth Mast + Sparmakers Foils Boat Plans + Kits

    My build pics are here:

    Flickr: Texas GIS' Photostream

    We built all the little bits first to get use to the epoxy, metric units and some new wood working tools. Have fun and keep us posted with lots of pictures.

    Texas GIS

  7. #6
    Join Date
    Jan 2012
    Location
    Perth, Australia
    Posts
    126

    Default Re: Goat Island Skiff (yawl) build in Perth, West Oz

    Back again I hope everyone had a merry Christmas.

    Well the cb blank is glued up but my clean up efforts ground to a halt when my belt sander shredded an intermediate drive gear (the screw holding the shaft in failed). I'll probably get stuck in tomorrow with my 1/4 sheet to remove the excess purbond and square up a bit before routing the blank (ala Simon Lew).

    Good to hear about another Western Australian goat Wayne.
    I'm planning on getting the paulownia from whitewood over east, that is unless you know of a supplier here in WA. For plywood I'll be probably going to Boating Hardware in O'Connor on Carrington Street. Though last time I went there the guy behind the counter seemed aghast that I didn't want to build a Sabre.
    I've just moved to Atwell so I'm in process of turning a construction site into a home (something the wife insists is a higher priority than a GIS)

    Thanks for the links on the yawl, John. I've had a good look at it and even if I don't use it all the time it'd be nice to have the option.

    Cheers all I should hopefully have some nice pics of a shaped board tomorrow.

    Cheers Dan

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  8. #7
    Join Date
    Jan 2012
    Location
    Perth, Australia
    Posts
    126

    Default Re: Goat Island Skiff (yawl) build in Perth, West Oz

    Back again with more photos.

    I didn't end up routing the blank today, instead I made a jig to shape the foil as per the Duckworks http://www.duckworksmagazine.com/09/...oils/index.htmarticle. Instead of messing about with trig I simply used a compass to apply the depth offset for the router(13mm) to the template in the plans. I transcribed an arc of 13mm to multiple points along the planned template and then faired the edge.
    uploadfromtaptalk1356687040858.jpg

    I then shaped it using an improvised router table. MacGuyver eat your heart out. (Turns out this was a bad idea)
    uploadfromtaptalk1356687188971.jpg

    I duplicated the pattern using a finishing bit and then glued them together with spacing blocks.
    uploadfromtaptalk1356687396408.jpg

    I'll give the jig a shot tomorrow. Here's hoping it all goes smoothly.

    Cheers Dan

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  9. #8
    Join Date
    Jan 2012
    Location
    Perth, Australia
    Posts
    126

    Default Re: Goat Island Skiff (yawl) build in Perth, West Oz

    Well things didn't go as smoothly as I hoped. A 13mm offset didn't provide enough meat on the jig to prevent flexing so the router ended up digging in too much.
    uploadfromtaptalk1356768888097.jpg

    So I decided the designer must have known what he was talking about and I went back to the original method.

    Luckily the damaged section of board is in an area to be cut out so it'll all work out nicely.

    uploadfromtaptalk1356769110954.jpg

    I've had to take a break due to a small injury, but hopefully I'll be able to crack on tomorrow.

    Cheers Dan

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  10. #9
    Join Date
    Jan 2012
    Location
    Perth, Australia
    Posts
    126

    Default Re: Goat Island Skiff (yawl) build in Perth, West Oz

    I finished shaping the centreboard today using the method in the plans. It went smoothly for the most part however there are a few divots that need filling. I was thinking of using ordinary plastic wood filler instead of an epoxy fairing compound, however I'm not sure how it'll work with epoxy later on. Any ideas?

    The board came out at a weight of 3.7kg so it should come out at about 4.5kg after fibreglassing (200gsm cloth 2 layers), is this in the ballpark?

    And now the photos.

    The finished board.
    uploadfromtaptalk1356857797461.jpg

    Torture board, we'll put that name to the test.
    uploadfromtaptalk1356857914838.jpg

    You win this time router.
    uploadfromtaptalk1356857957772.jpg

    Until next time
    Dan out.


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  11. #10
    Join Date
    Jul 2005
    Location
    'Delaide, Australia
    Age
    65
    Posts
    8,138

    Default

    Hi Dan,

    The wood filler won't help the divot IN YOUR FINGER!

    The downside of commercial wood fillers is often they are not formulated with a truly wet environment in mind. Many swell in an amorphous and unwoodlike way - usually because they are permeable and the filler used is cotton or wood fibres.

    That said ... after the glassing there will not be much chance of water getting through - so won't be a problem. I can't remember - is it two full layers of glass or just a band of extra where the board exits the centrecase?

    MIK

  12. #11
    Join Date
    Jan 2012
    Location
    Perth, Australia
    Posts
    126

    Default Re: Goat Island Skiff (yawl) build in Perth, West Oz

    G'day MIK

    Maybe epoxy then for the finger (good gap filling properties)

    I'm pretty sure the plans specify 2 layers of cloth ~200gsm, so I'll go have a look at what is available filler wise at my local hardware store. Nothing oil based though so the epoxy will have a good surface to adhere to. Maybe automotive stuff

    After all I'll be painting the board so I don't care what it looks like provided it's smooth and appropriately shaped. I figure it'll be easier to do this before the epoxy goes on.

    Cheers Dan

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  13. #12
    Join Date
    Sep 2011
    Location
    kallangur qld
    Posts
    1,074

    Default

    use an epoxy filler, wood filler shrinks and will not last (polyester resin), as it doesn't adhere to the timber very well,.

    Epoxy bonds better and is stronger.

    watch power tools they bite when you least expect them to, and the more you use them the more you forget that they can bite.

    Been there done that (Angle grinder 3 stitches), sharpening an axe 3stitches.

    Jeff

  14. #13
    Join Date
    Jan 2012
    Location
    Perth, Australia
    Posts
    126

    Default Re: Goat Island Skiff (yawl) build in Perth, West Oz

    G'day again

    Unfortunately Jeff I got your post too late. I've already filled the divots etc with Agnews water based filler, it should bond well with the timber and once entombed in epoxy and fibreglass should hold well. I'll give it a few days in the sun to dry out fully before epoxying, the weather this week has been a little warm for epoxy work (42degC most days).

    MIK's piece in the plans about taking care when shaping small pieces of plywood is where I came undone. The piece caught on the router bit and dragged the tip of my finger through with it. No stitches though, nothing left to stitch It's mostly healed now I've just gotta wear gloves until the skin grows back.

    More photos to follow

    Cheers Dan

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  15. #14
    Join Date
    Jan 2012
    Location
    Perth, Australia
    Posts
    126

    Default Re: Goat Island Skiff (yawl) build in Perth, West Oz

    Back again with another update.

    I finally bit the bullet and went and bought my epoxy this week. I went and got some boatcote and non yellowing hardener from my local supplier along with some 185gsm cloth and the usual sundries. I decided to fork out the little extra for the ny as I plan on finishing the interior, spars and transom bright.

    The putty in the previous post worked okay so long as you didn't leave it too long before sanding (~3 hours). Unfortunately, I did leave it too long on one side of the board due to competing priorities it becomes rock hard and a pain to shape (40 grit eventually sorted it).

    The competing priorities were definitely worth it though I got to put up my new shed (l4.5m*w3m*h2.3m) and some gates.

    Today I got around to playing with the epoxy for the first time using the lightweight filler as a skim coat prior to final sand before glassing. I found the boatcote quite pleasant to work with though without a slow hardener it kicked pretty quick (~32degC today).
    uploadfromtaptalk1357715424984.jpg
    I should be able to sand it tonight or tomorrow prior to skim coating the other side.

    Cheers Dan

    BTW the finger has mostly healed now (even without epoxy filling it).


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  16. #15
    Join Date
    Jan 2012
    Location
    Perth, Australia
    Posts
    126

    Default Re: Goat Island Skiff (yawl) build in Perth, West Oz

    G'day again
    Well turns out that I didn't need to skim coat the other side of the board so I cracked on and glassed the tip of the board.

    Checking the double bias (cut as per the plans) for size.
    uploadfromtaptalk1357735729648.jpg
    A fair bit over but she'll be sweet.

    The initial wet out.
    uploadfromtaptalk1357735887011.jpg

    After a bit of trimming and filling the weave. uploadfromtaptalk1357736136165.jpg

    Tomorrow more sanding fun followed hopefully by glassing the board. With the two layers of glass should I wait until the first layer of glass has gone tacky before applying the second? Or should I drop it on straight away?

    Cheers Dan

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