fiberglass lil' boat

Discussion in 'Fiberglass and Composite Boat Building' started by luix, Aug 22, 2013.

  1. luix
    Joined: Jan 2011
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    Location: panama

    luix Junior Member

    hello everybody im luis from panama,
    first excuse me for my english, im improving it...

    i got a small 10 ft dingy , boston whaler shape ( i dont know the correct name of that hull shape) in very bas conditions, it was abandoned in a dock

    [​IMG]

    now im trying to restore it
    the keyword of the work is REBUILD
    Rebuild the bow
    Rebuild the sides and made them higher, like 8 inch
    Rebuild the transom
    and i want to extend the hull 2ft

    [​IMG]


    i already sanded all the hull outside and inside

    [​IMG]

    [​IMG]




    today i began to take a model of the hull shape for the extension, i ll post photos soon.



    i wonder to recive your comentes and helps, this is my first time working withfiberglas so i have a lot of questions

    the first one that have its, if i use woven roving fiberglas 200g, how many lays will be needed to made a hull?
     
  2. dan catalyst
    Joined: Aug 2012
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    Location: st.pete

    dan catalyst Junior Member

    hello Luix, im going to give you a good semi educated guess at two layers of 1.5oz csm and a 24 oz roving. id use a 20 oz cloth, but roving will be fine, i dont think your worried about seeing the 'print' of the roving through the mat. you can tell it slides on three points when pulled up on the beach, and those three areas are thin on the bottom.id run 18-24 oz tape down the entire lengh of those three areas, front to back of the boat and cover that tape up with two layers of 1.5 csm mat. the holes and super thin areas will need reinforcing from the inside too with a single layer of csm for the thin areas and double layer for the holes.do that after you fix the bottom. then the sides would be something like a layer of 1.5 mat then a layer of 24 oz cloth or roving then another layer of 1.5 csm mat.if you can get plywood core in there it will be stronger.i fact you might think about cutting the sides off at the seat height and rebuilding them with playwood covered in fiberglass. good luck!
     
  3. dan catalyst
    Joined: Aug 2012
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    Location: st.pete

    dan catalyst Junior Member

    also, can you post a close up of one of the worn areas? as close as you can get your camera to focus. its hard to tell how this was made.resurch this, it will help us all. is it plywood covered in fiberglass,chopper gun lay up,or laminated?
     
  4. messabout
    Joined: Jan 2006
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    Location: Lakeland Fl USA

    messabout Senior Member

    Luix, you are doing a huge amount of work for a boat that will have limited worth when you finish the job. I admire your determination to make this a good little boat. I have advice formed from past experience.

    You can put this derelict aside and build the new boat that you want for less effort, and probably no more cost than making this boat into something that it is not. Adding sheer height and extending the length is not a simple or practical undertaking.

    Give the little boat a decent place to rest and build a much more practical boat of some of the beautiful wood that you have in your country. Such a new boat may very well last longer, and give better service, than the one in which you are spending so much precious energy.
     
  5. luix
    Joined: Jan 2011
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    Location: panama

    luix Junior Member

    hi, im back again
    lot of thanks for your coments
    @dan catalyst , here is one of the holes, this is on te bow, in the float copartment
    [​IMG]

    @messabout may you are in the most practical concept but i think that now its late to stop , my only option is to keep going on




    so...
    Now i have done the mold for de extension
    [​IMG]

    but im in query about how join the ext. whit the rest of the hull
    1- i can put the ext over the hull, then srew it and lay sevarls lays of fiberglass on the the joint and the use putty to even the hull

    2- put them side by side and fill the joint with strips of fiber, making several lays, each one litle wide than the previuos ...

    please give me yours opinions and advices.


    here more photos
    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]
     
  6. messabout
    Joined: Jan 2006
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    Location: Lakeland Fl USA

    messabout Senior Member

    It looks like you have done the extension very nicely. Put some stringers inside the boat so that they join the original part of the boat with the extension. That will stiffen the bottom and the extension. The main purpose is to avoid the load at the place where the two parts are joined.

    Keep up the good work. I admire your dedication to the job and you seem to be doing it well.

    Also please pet the little dog a on my behalf. It looks like you have a good friend there.
     
  7. luix
    Joined: Jan 2011
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    Location: panama

    luix Junior Member

    the stringers can be made whith wood stripe 1*1/2 and fiberglassed?

    @messabout the dog is hurry for go to sail
     
  8. messabout
    Joined: Jan 2006
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    Location: Lakeland Fl USA

    messabout Senior Member

    Yes, wood strips covered with glass. It might be good to lay them in a narrow strip of matt and resin so that they adhere to the bottom. Then cover them with glass. Be sure to make the covering as water tight as you can if you use wood to form the glass. One and a half inches of height will probably be fine. Actually the glass cover is what gives the part strength, so it needs to be fairly thick. Three or four layers of 10 ounce cloth tape will do it.

    You can make your stringers without the wood strips if you want to. Use something simple and cheap like carboard to form a hat section. Then glass over it generously. You can make the job neater and save some sanding by using a cover over the top of the wet glass. Builders clear plastic (poyethylene) can be laid over the wet glass and smoothed down with a flat stick or with your hand. When the resin cures remove the plastic and you will have nice smooth stringers. It does not matter that the cardboard will still be in the cavity. It cant go anywhere.

    Keep up the good work. and be safe.
     
  9. dan catalyst
    Joined: Aug 2012
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    Location: st.pete

    dan catalyst Junior Member

    Great job man! i love it!! looks like your ready to cut the boat in two and epoxy it in. use 2x4 to keep the two boat pieces lined up,well it will be three pieces then, but you got it. make sure the next cloth is wider by 6 inches ,then move to the inside and do the same.,covering up the seem with each next layer of cloth.
     
  10. swade
    Joined: Jun 2010
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    Location: apollo beach,fl

    swade Senior Member

    I'm subscribing to this thread for the balls to see something in that basket case and take it on! Good job with the extension. Just side thought, i saw the pic with the finish sander. i don't find those square finish sanders of much use except for maybe final finish fairing. For aggressive sanding i like a angle grinder with flap disk then moving to a random orbit or da....it goes much faster. Just the thought of sitting there with a square finish sander trying to remove material makes me tired.
     
  11. swade
    Joined: Jun 2010
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    Location: apollo beach,fl

    swade Senior Member

    You may know that, i just mention it because forever i thought that WAS a sander (not really putting 2 and 2 together and realizing that's why it's a called a finish sander) and i'd use it for everything. Then i got into DA's. Even then i was I was ignorant (am still am) because i got into air tools and then found out DA's have different orbits depending on how aggressive you want. But you may know this...
     
  12. luix
    Joined: Jan 2011
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    Location: panama

    luix Junior Member

    @swade thanks for your coment. the sander was used in a small area where the fiberglass are do thin and when i put the grinder with the sander disc made a hole so my friend use that sander inthere.


    the extension, and working right now joining te extension, i so happy because it goes strong.

    new pics soon

    lot of thanks to everybody who read and special for those who take few minuts to post a coment
     
  13. luix
    Joined: Jan 2011
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    Location: panama

    luix Junior Member

    here are the photos of how my work is going...

    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
     
  14. FibrSupplyDepot
    Joined: Sep 2013
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    Location: Fort Pierce

    FibrSupplyDepot Fiberglass Supply Depot

    OMG was it really worth fixing this boat, Cost to buying a used boat in semi good condition would of been cheaper. Just my 2 cents
     

  15. troy2000
    Joined: Nov 2009
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    Location: California

    troy2000 Senior Member

    But buying wouldn't have been nearly as much fun as what he's doing. And I wouldn't enjoy a picture of a bill of sale nearly as much as I'm enjoying the pictures of his progress on this boat...
     
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