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Thread: Building a Wharram Hitia 14

  1. #1
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    Default Building a Wharram Hitia 14



    This is episode 1 of the Building a Wharram Hitia 14 series. I receive and check the delivery of wood and I start drawing on the waterproof 4mm plywood. Two children from the neighbourhood come to check what I am doing and talk with me while I am drawing lines on the 4mm plywood.


    Since my last building video I moved to Bangkok, Thailand. This has always been on my mind, I imagined it in detail and now it is current reality. I am very happy. But with that move I had to make the decision to stop working on the Wharram Tiki 38 build, I miss my beautiful large workspace in Belgium. I also miss my friends in Belgium. I have made the decision to restart building Wharrams in Thailand and begin with a smaller Wharram, the Hitia 14, in order for me to learn techniques on a smaller scale and also have a small boat to sail with on the weekends.


    I have bought the plywood and tulip wood at Phuket Siam Timber. I highly recommend this company: http://phuketsiamtimber.com

  2. #2
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    Default Re: Building a Wharram Hitia 14



    On this new day I continued with drawing on the plywood. I am really taking my time here to make sure I am doing this correct. It's very warm in my workspace. I have a ceiling fan, but I ordered another ventilator. In my workplace in Belgium it was too cold and here it is too warm. But anyway I prefer the warmer climate here in Thailand.

  3. #3
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    Default Re: Building a Wharram Hitia 14

    Fiddley work, and you can't be too careful making patterns. It will pay off in the end.
    Good luck with your build!.

  4. #4
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    Default Re: Building a Wharram Hitia 14


    In this video I am cutting pieces out of the plywood with the jigsaw. I connect the jigsaw with the vacuum cleaner so that I need to clean up less and there is not too much fine dust in the air. Normally I also wear a respirator, but I am waiting for it to be delivered.

  5. #5
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    Default Re: Building a Wharram Hitia 14


    Another day of cutting plywood. I also received my respirator which I start using in the video. Some people have asked me why I am using a respirator when I am just cutting pieces of plywood with a jigsaw. I am very concerned about my health while building sailboats. I just want to prevent the amount of wood dust, epoxy fumes, glue dust and more that I inhale. I can't protect myself at all times, but most of the time. I not only want to build sailboats, I also want to sail and enjoy them and for that I need to be careful.

  6. #6
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    Default Re: Building a Wharram Hitia 14


    Today I am cutting parts out of the thicker 12mm marine grade plywood. I change the blade on the jigsaw. I also sand smooth some of the sides of the parts. I am starting to realise the usefulness of a band saw in a work shop.

  7. #7
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    Default Re: Building a Wharram Hitia 14


    In this video I start by putting the parts that I already cut on a new sheet of plywood and draw the shapes on it. The building instructions provide drawings on how to get the most out of a sheet by drawing/placing the parts at certain locations on the sheet of plywood.


    I feel very happy and relaxed when I am working in my workshop.

  8. #8
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    Default Re: Building a Wharram Hitia 14

    Hi SvSatoshi,

    ...I assume someone bought and continues your Tiki 38 in Belgium??

    Good Luck!

    thjakits

  9. #9
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    Default Re: Building a Wharram Hitia 14

    Quote Originally Posted by thjakits View Post
    Hi SvSatoshi,

    ...I assume someone bought and continues your Tiki 38 in Belgium??

    Good Luck!

    thjakits
    Hi thjakits,
    Thank you for your reply.
    A friendly german builder came to pickup the parts that I already made and my stock of wood and materials. I did not sell my Tiki 38 building plans, because I am going to build the Tiki 38 in the future, and the german builder already bought the Tiki 38 building plans himself from Wharram Designs. He will build his Tiki 38 in Germany.

  10. #10
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    Default Re: Building a Wharram Hitia 14



    And here we are again on Monday, after a 2 day break in the weekend. On weekends I spend time with my family and I do not work on the boat. On this Monday I did a little bit of everything. Cutting with the jigsaw, sanding, drawing and unpacking deliveries. One of the deliveries was West System epoxy supplies that I ordered from East Marine Asia.

  11. #11
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    Default Re: Building a Wharram Hitia 14


    On this day I was only for about 3 hours in the workshop. I made the details at the end of the mid platforms and the tongue stiffeners. After that I had to leave to go to Thai Watsadu, this is a DIY store chain. I had to go there because I needed to buy paint rollers for upcoming epoxy work later this week. All the local small hardware stores in my area do not have the type of rollers that I need. At Thai Watsadu they had 37 rolls and I took them all. I asked for 100 pieces, but they did not have more in stock.

  12. #12
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    Default Re: Building a Wharram Hitia 14



    On this day I only had 2 hours of time, because I needed to go to a parents meeting at my son's school in the afternoon. I wanted to put 2 coats of epoxy on the inner faces of the deck and side panels and both faces of the bulkheads, but while I was preparing I decided to lay down some sheets of plywood on the floor to protect it against epoxy spills. Tomorrow I will start applying the coats of epoxy.

  13. #13
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    Default Re: Building a Wharram Hitia 14



    Today I used epoxy for the first time in Thailand. There is a difference between using epoxy in Belgium at temperatures below 15 degrees celcius and in Thailand with temperatures above 30 degrees celcius. In Belgium I was using West System's fast hardener (205), in Thailand I am using West System's slow hardener (206). Even with the slow hardener I can very clearly notice that the epoxy is curing much faster. Today I applied 2 coats of epoxy on the inner faces of the deck and side panels and on one side of the bulkheads.

  14. #14
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    Default Re: Building a Wharram Hitia 14



    On this day I went to the furniture makers area of Bangkok to find some copper or brass screws and nails. I had to go in and ask more than 15 shops before I found a shop that sold those. I bought a selection for my workshop. After that I went home and ate dinner with my son. It was already night. I was tired, but decided to go to the workshop anyway to epoxy coat the backside of the 4 bulkheads that I epoxy coated yesterday. I first moved all parts that were laying curing on the floor to another room on another floor. Then I decided to epoxy coat more than I initially planned and layed down the panels for the other hull on the floor too.

  15. #15
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    Default Re: Building a Wharram Hitia 14



    Soon I am going to stitch the panels together with copper wire. I have never done that before so today I did a little test with 2 small pieces of plywood.

  16. #16
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    Default Re: Building a Wharram Hitia 14



    In the project I need battens with dimensions of 9mm x 19mm. Almost all the wood that I have ordered is already cut exactly to size, but for this one the 9mm x 19mm I have 10mm x 25.4mm, so I will use the planer to get it at that thickness. After doing that I marked the positions on the inner faces of one set of the sterns & bow panels.

  17. #17
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    Default Re: Building a Wharram Hitia 14



    In this video you can see that the bow and stern panels are joined with a butt block. I also place 2 backing pads for the beam lashings. First I determine the location of the butt block and the backing pads, then the surface is sanded with 80 grit sandpaper and cleaned. Then I mix some epoxy and apply it on one side of the butt block and backing pad. I let it stay for a couple of minutes so the plywood can soak in the epoxy. Meanwhile I am adding a cotton fibre adhesive filler to the epoxy mix and thicken it to a "mayonnaise" consistency. Then I apply it to the surfaces and place the parts on the spot where I want them. In the case of the butt block I use some brass panel pins to hold the butt block in position while epoxy and cotton fibre glue sets.

  18. #18
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    Default Re: Building a Wharram Hitia 14



    In this video I am removing the brass panel pins from the butt block. You might have noticed that the brass panel pins are not totally hit into the wood. On the building plans they are totally flat with the wood surface for providing the necessary contact pressure. I felt and noticed that in this case there was enough contact pressure by hitting them in just a bit.


    After removing the brass panel pins I did the same procedures for glueing the butt block and backing pads for the other side panel.


    Then I proceeded with drawing the scarf joints on the 19mm x 9mm sheer stringers. I need 4 sheer stringers that are as long as the hull, and for that I need to make a scarf joint for every sheer stringer, because the battens that I have are not long enough. In total I have to make 4 scarf joints.

  19. #19
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    Default Re: Building a Wharram Hitia 14



    In this video I am glueing the scarf joints together. I first apply unthickened epoxy on the joint surfaces, then I mix come cotton fibre with the epoxy until it is a mayonnaise consistency and then apply it to the surfaces. I clamp it all together, putting plastic at various places where I don't want squeezed out epoxy leak on clamps or the floor.


    I also draw the spots where I am going to drill holes for the copper wire stitching.

  20. #20
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    Default Re: Building a Wharram Hitia 14

    Quote Originally Posted by svsatoshi View Post


    Soon I am going to stitch the panels together with copper wire. I have never done that before so today I did a little test with 2 small pieces of plywood.
    Why not use plastic zip ties? Seems a lot more practical.

  21. #21
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    Default Re: Building a Wharram Hitia 14

    Quote Originally Posted by johnw View Post
    Why not use plastic zip ties? Seems a lot more practical.
    Hello Johnw, thank you for your suggestion. Yes I think that would work fine, maybe even better. I have heard that some newer Wharram designs building plans suggest using zip ties. My plan mentioned copper wire and then I bought that. My next boat I will try the zip tie method.

  22. #22
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    Default Re: Building a Wharram Hitia 14

    If you slightly round the hard edge where the wire ties pull the joint together, it becomes much easier to assemble with a fair join.

  23. #23
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    Default Re: Building a Wharram Hitia 14



    In this video I am fixing the sheer stringer to the side panel. I first prepare the scarf joints, after that I prime the surface of the side panel and one side of the sheer stringer with unthickened epoxy and after that I thicken the epoxy with cotton fibre and apply it on the sheer stringer with a notched spreader. I then place the sheer stringer and nail it down. I will try to remove the brass pins on one of the next days. I am not hitting the brass pins lower, so that they are easier to remove later, and I can see and feel the pressure is already enough (the epoxy is pushed out from the sides of the sheer stringer).

  24. #24
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    Default Re: Building a Wharram Hitia 14

    Quote Originally Posted by trent hink View Post
    If you slightly round the hard edge where the wire ties pull the joint together, it becomes much easier to assemble with a fair join.
    thank you trent hink for your good advice

  25. #25
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    Default Re: Building a Wharram Hitia 14

    Zip ties need a larger hole, for the same strength. No big deal, just a larger hole to fill. Also, you canít loosen a zip tie...

    That said, I use some zip ties, some screw blocks, and duct tape when and where I can. I like screw blocks for places the panels need to be in an absolute position, and ties and tape for everywhere else.

    A fourth hand tool for bikes makes an excellent zip tie tightener.

    Safety wire works as well as copper, and is thinner, stronger for the size, and cheaper. I use safety wire for anywhere I wire together, now.
    Wires have the benefit of flexibility, after all. They are easy to adjust by twisting them looser or tighter...

    Peace,
    Robert

  26. #26
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    Default Re: Building a Wharram Hitia 14

    Quote Originally Posted by Building Wharrams View Post
    Hello Johnw, thank you for your suggestion. Yes I think that would work fine, maybe even better. I have heard that some newer Wharram designs building plans suggest using zip ties. My plan mentioned copper wire and then I bought that. My next boat I will try the zip tie method.
    Works a treat, and you can remove them with a chisel and sand the rest off, so you don't have to remove them. And they're cheap!

    http://forum.woodenboat.com/showthre...-small-catboat

    My own stitch & goo build.

  27. #27
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    Default Re: Building a Wharram Hitia 14

    I also used zip ties on my duck punt build, but I donít know how to link threads.

    I think I used tape, too. I donít remember.

    Peace,
    Robert

  28. #28
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    Default Re: Building a Wharram Hitia 14

    Also, you can’t loosen a zip tie...
    But you can -- just slip a very small screwdriver blade into the ratchet tab and you can loosen it or remove it entirely if you want.
    -Dave

  29. #29
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    Default Re: Building a Wharram Hitia 14



    In this video I am doing more work on the hull side panels. First I am removing brass panel pins from the sheer stringer that I placed in the previous video. After that I go on and prepare the side panels of the other hull. Before I apply the unthickened epoxy I sand the surfaces a little bit with 80 grit sandpaper. After that I add colloidal silica adhesive filler (West System 406) to the mix and stir it well. I drill small holes in the sheer stringer where I want to put the brass pins. I find that it works better than trying to hit the pin all through. A food seller in the street comes to have a look and asked me what I am doing. People are very nice and friendly in my neighbourhood. I am very happy and relaxed here in Thailand.

  30. #30
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    Default Re: Building a Wharram Hitia 14

    Quote Originally Posted by Woxbox View Post
    But you can -- just slip a very small screwdriver blade into the ratchet tab and you can loosen it or remove it entirely if you want.
    I did not know that, never tried

  31. #31
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    Default Re: Building a Wharram Hitia 14



    In this video you can see almost the same thing like in the previous 2 videos. I suppose this is very boring for people to see, but I am showing the reality of building a catamaran, where many things you have to do twice.

  32. #32
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    Default Re: Building a Wharram Hitia 14



    In this video I start with a little clean up of the workshop. After that I remove some pins from one of the scheer stringers. The sheer stringers are a bit longer then the panels, so I place each side panel on the workmates and cut the sheer stringers to almost the right length. Then I clamp two panels together and draw the locations of the holes, and after that I drill the holes. Towards the end of the video I also draw and drill the holes for the bulkhead stitches.

  33. #33
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    Default Re: Building a Wharram Hitia 14

    IMG_5422.JPG
    Some encouragement!!

  34. #34
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    Default Re: Building a Wharram Hitia 14



    In this video I am stitching the stempost and keel to the side panels. The first few stitches took some time, but soon after I was doing the stitches very fast.

  35. #35
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    Default Re: Building a Wharram Hitia 14



    In this video I first remove possible residue wax (amine blush) from the bulkheads which have 2 coats of epoxy. Then I continue with making the deck supports and stiffeners for each bulkhead. After that I sand the bulkheads with 80 grit sandpaper on the spots where the deck supports and stiffeners will be glued.

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