Thanks Thanks:  0
Likes Likes:  0
Needs Pictures Needs Pictures:  0
Picture(s) thanks Picture(s) thanks:  0
Results 1 to 10 of 10
  1. #1
    Join Date
    Jan 2009
    Location
    São Paulo, Brazil
    Posts
    47

    Smile Building a GIS in Brazil

    I´ve made a fair amount of progress over the last week - given the slow pace I work at. The transom and all bulkheads now framed, bevelled and cleaned up, using a batch of West Systems gluing powder I brought back from the UK (reasoning that bringing mysterious white powder into Brazil not likely to worry the customs guys). The gluing powder is tough stuff! All went well except for #1, where I totally got the bevelling wrong. So a new #1 for the boat and an interestingly shaped coffee tray for the house. My tip for the day to avoid this - sketch out a plan of the boat showing all the bulkeads and their framing and exaggerated bevels so you can see at a glance if you are bevelling from the right side. Started by getting into a sticky mess juggling wood, screws, panels and electric screwdriver around but got better with practice. If purgatory awaits me, I am pretty sure that epoxy resin will figure prominently somewhere amongst the punishments!

    I paid a lot of attention to getting the bulkhead dimensions right, so fingers crossed the hull shape will be right. After reading the thread about the chine log notches and the need to shim the bottoms of the bulkeads, I decided to hold off doing the notches for the moment in case Mik comes up with a new way of doing them over the next month or two.....

    I learnt a lesson the hard way - dont leave your plywood anywhere near the sunlight before you epoxy coat it. My beautiful cedar plywood ended up bleached and blotched, even though it was not in the direct sunlight. I was hoping to clear finish the interior, painting the outside of the boat, but I´m not sure that is going to work.- sanding is not removing the bleaching marks. I will experiment with applying a cedar wood stain on a spare bit before epoxy coating and if that does not work I may have to paint. When I get the sheets for the hull panels, I will cover them with plastic sheeting the moment they arrive..

    I am heading for the timber yard Monday to select the Freijo wood for the hollow mast (the nearest equivalent to Spar Oregon available here). I want to make sure that the sticks are milled really straight, as the Marupa I used for the other spars was slightly curved. Fortunately, the curves are consistent and I hope the sailmaker will know how to deal with them. I have decided not to hang 10litre buckets of water on the spars and measure the bend - it will only depress me!

    So - still a long way to go but lots of 3-dimensional bits now sitting in a pile, which is good to look at. And at least the finished foils, tiller, centreboard case and spars are waiting there quietly for the hull to be finished.


    Best wishes

    Steve

  2. # ADS
    Google Adsense Advertisement
    Join Date
    Always
    Location
    Advertising world
    Posts
    Many





     
  3. #2
    Join Date
    Oct 2008
    Location
    Santiago, Chile
    Posts
    70

    Default

    Well done Steve,

    I´ve just finished my GIS in Chile and I´m waiting for the sail to be released from customs. Hopefully no white powder on it! - I think Chileans are more taugh on this kind of issues.

    I agree completely with you about the holes for the chine logs in the bulkheads, In fact I cut them without bevel and was a hughe mistake, I have to put a lot of epoxy and I fill the spaces with small pieces of wood, at the end it worked well as the largest defect was in BH1 which is kind of covered with BH2.

    Regardin the wood damaged with the sun exposure, I think you can safely use stain to return colour you want, sometimes you need more than one layer, and be carefully because the epoxy changes the final colour of the wood too.

    Best luck.

    JC.

  4. #3
    Join Date
    Jun 2009
    Location
    New Hampshire
    Posts
    960

    Default

    Quote Originally Posted by StephenR View Post
    If purgatory awaits me, I am pretty sure that epoxy resin will figure prominently somewhere amongst the punishments!
    Me and you both, brother. Me and you both.

  5. #4
    Join Date
    Jan 2009
    Location
    São Paulo, Brazil
    Posts
    47

    Default

    And the rain goes on - and I think it is mucking up my epoxying of the bulkheads. I look at all those lovely pics everyone posts and then I see this:


    (the problem is the bulkhead, not my feet, by the way!)

    Before I sand it right back and start again (or give up and paint the interior) any tips on what is going wrong. I think it is probably the humidity or the epoxy I am using - or both. Anything I can do? Suggestions welcome. (I already know one of them: "dont give up the day job")

    On the other hand, the freijo wood for the hollow mast has arrived. Lovely long, knot-free, straight and light sticks so lets see if I can make a good job of it. Cost me about $150 dollars so I had better do a good job.


    "keep plodding on" has become my motto.

    Best

    Steve

  6. #5
    Join Date
    Jul 2005
    Location
    'Delaide, Australia
    Age
    65
    Posts
    8,138

    Default

    Howdy,

    It sometimes happens like that when the weather gets really wet. Also differs between epoxy brands.

    A dryer or less humid part of the same day might have quite a different result.

    Michael

  7. #6
    Join Date
    Jan 2009
    Location
    São Paulo, Brazil
    Posts
    47

    Default

    Thanks, Mik I did some experimenting and have found a work-round. A very thin layer of wood filler applied with a wet cloth so it is not even visible seems to seal the pores enough to stop the epoxy doing this. Or the weather is less humid. Whatever the case, lots of sanding to do to remove the bad epoxy and reapply. Goody - just what I love!

    Spent Carnival doing the mast, in between sneaking peaks at the scantily clad ladies parading on the telly. Managed to transform this:



    Into this:



    Note the bench I constructed to hold everything. For once, I did some foreward planning and thought "grovelling round on the car porch floor with my creaky joints - not for me" and ran up this temporary bench in a couple of hours (for once, not worrying about those 10ths of a millimetre Mik puts in his plans). The best decision I have taken. Put those long floppy bits of wood at a convenient height and made planing and gluing pleasure. I made it according to the book, only adding a couple of hardwood (Ipe) blocks top and bottom to cover the end grain and take the knocks (and they look cool!):




    If the bathroom scales are to be believed, the whole thing (epoxied and fibreglassed top and bottom) seems to weigh in at 8kg - which seems well in line with what others are achieving.

    Now I have to save up for a month or so to purchase the wood for the hull panels. Brazil cleverly plans for every tax bill conceivable to become due just when no-one has any money left after Christmas and the hols. In the meantime I´m going to see if I can get myself a 'business trip' to Chile to go and see JC´s great-looking GIS, which should inspire me to finish the job this century.

    Steve

  8. #7
    Join Date
    Jul 2005
    Location
    'Delaide, Australia
    Age
    65
    Posts
    8,138

    Default

    That's great about the business trip!

    The rack along the wall is great for the mast building. The great American yacht designer Francis Herreshoff used to recommend the same method - I had forgotten about it.

    Good thinking!

    Michael.

  9. #8
    Join Date
    Jan 2009
    Location
    São Paulo, Brazil
    Posts
    47

    Default

    Quote Originally Posted by Boatmik View Post
    That's great about the business trip!

    The rack along the wall is great for the mast building. The great American yacht designer Francis Herreshoff used to recommend the same method - I had forgotten about it.

    Good thinking!

    Michael.
    I reinvented something HERRESHOFFrecommended?! That makes my day! Once I have used the rack to do the varnishing, I thought I could saw it into sections, screw on some stabilising triangular feet and, voilá, two or three stands to set the hull up on. Bet you FH didn´t think of that!

    S

  10. #9
    Join Date
    Jan 2009
    Location
    São Paulo, Brazil
    Posts
    47

    Default

    Speaking of Herreshoff, by one of those coincidences that happen I have just been reading a local sailing mag and found out the identity of the large schooner which I see in the waters where I sail (Sao Sebastiao/Ilha Bela) and have been curious about for a while. It is the 1928 Herreshoff Wildefire, which came to Brazil in 1946 and now sails under the name Atrevida. With so much glass sailing round those waters, it is good to see someone (wealthy) looking after a classic down here - nothing like as common as the US and Europe. I must try and get a bit closer to take some photos.

    S

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

    Default

    Would be nice to see some pics.

    I received an email yesterday from two locals and a French person wanting to build a Goat in Brazil. That is pretty cool!

    MIK

Similar Threads

  1. GIS in Brazil - finding materials, ply, epoxy and building
    By Boatmik in forum Michael Storer Wooden Boat Plans
    Replies: 35
    Last Post: 1st October 2009, 01:16 PM
  2. Brazil Tulip (tulipwood) electric guitar neck experiment
    By R3R in forum MUSICAL INSTRUMENTS
    Replies: 16
    Last Post: 13th August 2009, 07:50 PM
  3. Kingwood (Brazil) electric guitar neck experiment
    By R3R in forum MUSICAL INSTRUMENTS
    Replies: 9
    Last Post: 12th August 2009, 05:30 AM
  4. Tulipwood from Brazil
    By PenTurner in forum WOODTURNING - PEN TURNING
    Replies: 7
    Last Post: 14th June 2007, 04:11 PM
  5. Australia v Brazil
    By Shedhand in forum NOTHING AT ALL TO DO WITH WOODWORK
    Replies: 45
    Last Post: 21st June 2006, 09:07 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •