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Thread: Building a 10 ft Dinghy (#127; Gartside)

  1. #71
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    Today we riveted the garboard on both sides. I used Simson MSR BC to make sure the hull would be okay and water tight for the next 50 years.

    Here are some pictures



    rear view with garboard mounted



    front view from mounted garboard



    rivetted garboard detail from stem



    riveted garboard detail from stem right side



    riveted garboard detail from transom

    It was fun to do

    Although I planned to do only the rivets and later the roves, I noticed that quit some putty (Simson) was pressed out when puting the roves on. So I continued before the putty had the opportunity to harden.



  2. #72
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    Next step was to steam the second plank in place. From the garboard I learned to do the steaming previous to the final fitting. It is much easier to fit a plank that is twisted already and can be put in place without a lot of effort.



    detail from steamed second planking



    detail amidships from second steamed plank

  3. #73
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    Nice to work with larch for the planking.

  4. #74
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    I will try to explane some more on how I made the rabbet in front of th planks and after.

    The overlap between two planks is 2 times the plank thickness.

    The first plank (garboard) fits in the rabbet of the keel and stem. No more rabbet needed at this side. On the other side a rabbet is made, I used 25 cm for all rabbets in the planking with an overlap of 17 mm (10 time the overlap between the planks minimum) The rabbet starts from the 25 cm point to the end of the plank. At the start no rabbet; at the end of this under laying plank a rabbet is planed at the outside with 2/3 dept at the inner side and 3/3 dept at he outer side ( null remaining plank...)

    The second, overlaying plank has the mirroring view. At the start; 25 cm from the end nothing... a bevel, no rabbet is planed at the inner side of the plank coming to 1/3 of the planking at the end.

    The other side of second plank is planed with the rabbet as the garboard. Take care to plane the right side (inner and outer side) The rabbet is planed on the outer side; The next plank stays strong and encloses the rabbet; to keep a strong hull.

    I used a small block clamped to the rabbet plane; to have a strong edged rabbet. I do not have a rabbet plane where the width of the rabbet is controlled with a side rail.

    Are pictures / drawings needed to make it more clear?

    Regards, Christiaan

  5. #75
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    One trick is cut the rabbet line with saw, then it is easy to plane.

    You are working in warm, maybe central heated shop?
    When planking is ready to framing, you must take care to have proper planking moisture before framing, specially because you have putty between planks, that prevent any movement on plank seams.
    I am saying; do not frame too dry boat!
    How I know that, you can quess.

    The right moisture for your boat you have to ask local professionals.

    Matti

  6. #76
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    Thanks Matti. for following my build and helping me
    I will try to use my saw to make the rabbet line and then plane it.

    The shop I am working is relatively moist. 80-90% at the moment. We have some heating to keep the frost out. Last week we worked with hats on :-) I do not use putty between the planks; I use it at the stem and transom. The planks it self do not get putty, Just rivets/roves. In the final finish of the boat, I will make a small strip with putty where the overlap ends. Nevertheless the tip is very worthy. I can feel the nasty experience you must have had. And will ask a boat building school nearby.

  7. #77
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    That will be OK, relativ. moist should be over 60 or so, on picture the shop looks very warm and dry.
    Old saying; wise man learn from others mistake

  8. #78
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    Friday we steamed the third plank for the second time. I noticed that in the steaming the first time, I did not notice that the plank curve changed considerably. On second thought this happened with the second plank as well. The second plank we altered, to fit as best as was possible, given the problems of the changed measurements. This time I notice the cause and changed the curve back with the second steaming. To day I fitted the left side of the second plank. Resteaming worked!

    Some pictures.



    detail of meauring the plank curve



    steaming third plank in place right side



    steaming third plank rear end in place



    another plank roufly cut with the band saw



    the set up of the band saw to split the planed plank in two; this way we create the left and right plank in one go. And it is much more efficient in the use of wood. The raw plank thickness is 27 mm. The plank size in use is only 8,5 mm. Bij planing the raw plank to 23-24 mm. We manage to split the plank in two. Easy going on the band saw is needed. And keeping the gap created by sawing a little open to prevent the band saw to slip. It is not always a success but still better than having to use a double amount of stock.



  9. #79
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    Last week I fitted the fourth plank. It is noticeable that my experience in planking is growing. The result is improving. And with less effort. The most difficult part was to get a good curved plank that fitted without to much of steaming. And perhaps more important, to keep the shape when steaming. With the first planks, we overlooked the fact that when steaming, not only twist and curve could be given; the curve in the plank, given in 2D, when taking the size from the spiling batten; can be altered when the wood is warm and soft.

    Pictures from the result



    fourth plank rivetted



    fourth plank rivetted rear view



    detail of stem with fourth plank rivetted

  10. #80
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    In the meantime I fitted the next two planks. The seventh plank in steamed in place. An experiment with the seventh plank worked out well. I made a long plastic bag from garbage bags and duck tape to steam the plank. This way I could steam a larger part at once. I hoped to realize that the plank when clamped could be altered in shape over a longer part without creating bumps at the spot that was less warm. As I have lumber from app. 20 cm wide and the curve the planks need is a more than expected in the middle planks, I tried the steaming to give the planks some more curve and thus make it possible to use the wood. Nice!

    I did find out though that the plastic is a little bit thin for this work. Advise is to get some what thicker material at the shop.

    Some pictures. It starts looking like a boat.



    fifth plank fitted rear view



    detail of hull so far, five planks fitted



    7th plank steamed in place side view. It starts looking like a boat!



  11. #81
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    Good work!
    For plastic, I think that rolls used for kitchen vacuum packing machines would be perfect. The rolls are actually long bottomless tubes made for heat-sealing in to any size. The plastic is thick and should easily withstand high temperatures.

    /Fredrik

  12. #82
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    Loving following this build. thank you for sharing with us! I am doing a repair/restoration on an enterprise dinghy in the uk.

  13. #83
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    " As I have lumber from app. 20 cm wide and the curve the planks need is a more than expected in the middle planks, I tried the steaming to give the planks some more curve and thus make it possible to use the wood."

    I know this is too late.
    To avoid to have too curve upper planks, you should use no or almost no taper on four first planks.
    Your second plank has quite big taper.
    https://dl.dropboxusercontent.com/u/32496642/soutuvene.JPG
    As you can see four lower planks rise high on stem, then upper planks are almost straight.
    Trick widely used here.
    Maybe someone feels that different width on planks ends on stem looks ugly but when you know the reason, it looks much better.

  14. #84
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    Hi Trango,
    Good idea to use vacuum plastic on roll. I will try to get some at the local butcher.

    Matti, Thanks for sharing the local insight for lining off to have more straight planking. It is too late for this project. Never too late for learning.

    Regards, Christiaan

  15. #85
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    I'm not sure if these folks ship internationally, or if it's worth the effort, but uline is a great supplier of plastic tube stock that works well for steaming in place
    http://m.uline.com/h5/r/www.uline.co...43/Poly-Tubing

  16. #86
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    She shore is coming together well keep up the good work at this rate you will be finishing before me.

  17. #87
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    Matty, Do you have a thread where you post the restoration?
    Regards, Christiaan

  18. #88
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    J Stabr /> I loved to read your progress on your dinghy.

  19. #89
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    Quote Originally Posted by Helder0906 View Post
    Matty, Do you have a thread where you post the restoration?
    Regards, Christiaan

    Hi Christian, here is what I am doing

    http://forum.woodenboat.com/showthre...-needed-please

    Matt

  20. #90
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    Last three weeks I have work on the last planks. The last plank is work in progress.



    Heres a picture of the last plank before fairing the shape



    And after the fairing. Plank is ready to be fitted. I want to make a beam on the plank. The router bit is not yet delivered. So I will start with something else to do next days.

  21. #91
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    Some trouble I had was with the last planks, where the planks come flush on the transom, using a beveled rabbet.

    The curve in the transom was so strong there, that it was difficult to have the smooth plank to plank fitting without having to adjust the transom to heavily. And when it first occurred, I had already planed the bevels, leaving a gap between the two planks. Next pictures shows some of the trouble,....



    The gap... Luckily I use PU putty....

    With the last two planks; plank 8 and 9 out of 10; I altered the rabbet, to get less gap. I couldn't think of a solution without having some what less flush fitted planks, though... And still quit difficult fitting

  22. #92
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    As the hull is almost done, The next step comes in sight. Turning the hull; fitting the center board casing and steaming and rivetting the frames. Before doing so, I would like advise on the varnish system to use. I would like to put the stuff on before fitting the frames and on the inside of the casing to. It it hard to get the stuff applied after mounting.

    The discussion on this forum makes it difficult. From what I understand: Use epoxy and a two component varnish when a boat is build in Ply. I use massif wood (White oak and larch) As a matter of fact I ordered epoxy and DD coat (varnish) I wonder it is best to try and return these; and to by a one component varnish, like epivarnish. What problems are to expect in the long term when I use epoxy and PU varnish instead?

    I hope you can be of help.

    Regards, Christiaan

  23. #93
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    I decided to go for an epoxied hull. Unfortunately not much help from you guys...

    The one I asked for advise here in the Netherlands where not very outspoken, although more in favor for use of an traditional varnish. A funny thing happened when I contacted Epifarnes, A main varnish brand in the Netherlands, to inform me on the total system to use. They advised me to use epoxy instead. The main reasons: The boat is new and made in dry conditions and out of dried wood (moisture less than 12%) Use of epoxy will seal the boat in and conserve it the beast way. Use of 4-5 layers of epoxy advised. The first of them with extra long pot life and warm (and there fore more fluid) That way the wood will absorb the epoxy best. The layers should be applied one after another, not drying complete, no sanding in between. After the last layer sorrow drying is necessary. Than sanding; than a PU based transparent 2 component 'varnish' to give the whole a UV resistant coating. Specifically, The man said: use epoxy on both sides to have it work. Inside and outside. Other wise it might give problems when the would attracts moisture on the inside. On the parts under the waterline, I will apply two layers of epoxy primer (white) with some red color to have a light pink color as a result. (Girls boat, remember )

    I am very curious whether it will work. I am confident it will.

    Any comments?

  24. #94
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    The last days I finished the last plank. I was waiting for a router bit to create a bead. A nice detail on the last plank, the inner gunwhale and seat riser.



    detail of router bit to create the bead




    detail of bead in gunwhale plank

    It was quit critical to lead the plank over the router table (long side up) A few small repairs had to be made, small enough not to draw attention to.




  25. #95
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    Yesterday the final planks where fitted. What a beauty After the first plank was done, I took coffee and sat for fifteen minutes, Just enjoying the beautiful lines.



    end result of the planking; love...



    end result of the planking



    end result of the planking front side. Thanks to Paul Gartside for the lovely lines.


  26. #96
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    Lovely indeed! Nice job. Thanks for taking the time to post.

  27. #97
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    Beautiful boat! On my plywood boat, I coated the outside with one coat of epoxy, washed off the amine blush (important) then two coats of primer and two coats of Brightsides one-part polyurethane paint. No problems so far. I did coat the bottom planks on the inside as well to really seal them. This protects against any rain or condensation or seawater that might collect there.

    The advice you got seems like too much epoxy to me, especially if you are going to prime and paint. Traditional boats had no epoxy. But I'm no expert. Hopefully someone will come along to advise.

    Best of luck.

    Mike

  28. #98
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    Quote Originally Posted by Helder0906 View Post
    As the hull is almost done, The next step comes in sight. Turning the hull; fitting the center board casing and steaming and rivetting the frames. Before doing so, I would like advise on the varnish system to use. I would like to put the stuff on before fitting the frames and on the inside of the casing to. It it hard to get the stuff applied after mounting.

    The discussion on this forum makes it difficult. From what I understand: Use epoxy and a two component varnish when a boat is build in Ply. I use massif wood (White oak and larch) As a matter of fact I ordered epoxy and DD coat (varnish) I wonder it is best to try and return these; and to by a one component varnish, like epivarnish. What problems are to expect in the long term when I use epoxy and PU varnish instead?

    I hope you can be of help.

    Regards, Christiaan
    I really like International Universal Clear Primer. As it is clear you can varnish or paint over it.
    http://www.yachtpaint.com/MPYACMData...Y+20141215.pdf
    It really is quite difficult to build an ugly wooden boat.

    The power of the web: Anyone can post anything on the web
    The weakness of the web: Anyone can post anything on the web.

  29. #99
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    Today I build a base to support the boat when turned. And turned the boat. Very nice. Pictures will follow.

  30. #100
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    Here he promised pictures. The nice sheer comes out properly. And the elegance of the heart shaped transom.




  31. #101
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    Gorgeous!

  32. #102
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    Bravo!
    If he ever drinks the brew of 10 tanna leaves, he will become a monster the likes of which the world has never seen



  33. #103
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    Really nice. Keep it coming.

  34. #104
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    Boy that's pretty! Great job and thank for sharing.

    If I ever build real lapstrake I'm going to use this thread as a reference.

    Mike

  35. #105
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    Default Re: Building a 10 ft Dinghy (#127; Gartside)

    Wow, that is a gorgeous hull. Kudos to you and Mr. Gartside.

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