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lenm

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Posts posted by lenm

  1. On 17 March 2017 at 8:21 AM, Drew said:

    Alex, I too am having trouble finding suitable tubing that fits the specs without the expense of importing a special order, which I find very surprising. I tried the contacts that Alan recommended some time back, but they claim they can't supply without importing. Their 3 inch tube has a wall thickness of 6mm, so is not only heavy but won't mate with any suitable tube for the top mast section. I have no idea why. If anyone finds a suitable supplier in Australia, please let us all know.

     

    Has anyone considered adapting windsurfer masts for parts of sail boats?

    The older generation masts are about 50mm diameter and can be had for a song $ (especially second hand ones).

    If you find a 'wave' version they are designed to take a beating in heavy surf.

    Normally constructed out of carbon fibre and kevlar - They range in weight from 2 - 5kgs and lengths 4-5m. 

     

  2. Thanks for the comments

     

    10 hours ago, PAR said:

    You do realize with this level of craftsmanship, the kitchen remodel that's on her mind, will need to be more and more elaborate and expectations much higher. Show her a few hammer bruises and broken setup screws, in a likely vain attempt to save the day.

     

    Haha - You are wise man PAR - I'm liking your stratagem :-)

    Beforehand, I have been requested to reinstate the growing inventory of kitchen items now relegated to boat building duties - added the kettle and vacuum cleaner to the list as of last week.

  3. Thanks to the suggestions my shear clamp turned out great - Can really see the shape in the hull now too!

    Very satisfying looking at this after 5 months of part time building.

    A little more fairing required then ready for planking.

    20170513_202748.jpg

  4. I spoke to soon - cant get the nominated  3/4 inch pieces around the shear clamp (even tried steaming). Interesting how the pine creases rather than breaks when steamed.

    Its broken nevertheless.

    Not sure what thickness to try now?

    Dont want to steam.

    Any suggestions appreciated.

    20170402_164921.jpg

  5. Plenty of exercise wrestling the ribs on today. Thankfully i havent broken any pieces as yet.

    Planning for twin outboards so went a bit unorthodox with the transom construction. Need to carry the reinforcing further across the transom than a single outboard.

    Everything slots through then will be cut flush.

    The thickness of the transom will then be layered until design thickness is met.

    I think this method will be work out easier than notching.

    The twins weigh the same as a single large outboard which is good.

    20170324_143024.jpg

    20170219_173411.jpg

  6. Looks like you are doing a thorough job of glassing. Are you planning to do underside of floors also? 

    May i ask what type of fibreglass you are using for this project? Offcut looks like a 45/45 double bias or a triax?

     A log of different schools of thoughts re what to use. The choice of weave and weights seems a bit bewildering every time i check out the composites catalog.

  7. Thank you PAR !

    Thats a great starting point

     

     

     

    It all depends on the species of the plywood, some suck up more than others. The hardwoods seem worse at this than the softwoods, but I've seen Douglas fir suck a surface dry of goo too. As a rule a quart (.94 liter) of epoxy will cover about 100 sq. ft. or 9 sq. meters on raw wood and on previously sealed surfaces 125 sq. ft. - 11.6 sq. meters, respectively, per coat.

  8. Does anyone mind sharing their rough guide regarding how much (quantity) of thickened epoxy is required to bond two layers of ply.

    E.g. 50ml per square foot?

    I'm getting ready to layup my transom and am trying to calculate a ballpark figure as to what quantity of epoxy I may require.

    Thanks

  9. Haha great idea Dave!

    So happy to have made some progress!

    Jig done

    Hoop pine keel done

    Stringers and bulkheads cut out

    Start assembling soon.

    The keel was an interesting introduction to woodworking. Despite obtaining the best timber available, it still had some minor irregularites (bow), however i was able to strategically place the parts (opposing) so that the bow cancelled each other out.

    It is perfectly straight.

    Being a surveyor i have an OCD when it comes to measurements :-)

    post-4724-0-76228800-1481787664_thumb.jpg

    • Like 1
  10. Finishing off Ocracoke Jnr whilst waiting for epoxy to dry on Snr:-)

    Planked her with 3mm h80 foam and sheathed with 4oz aerialite surfboard glass. Just need to finish the inside and ready for fairing.

    I actually have a scale outboard for it as well which runs!

    post-4724-0-49404700-1480762930_thumb.jpg

    • Like 1
  11. Thanks Tom for some more expert opinion.

    This timber material subject is interesting stuff..

    I played around with some Meranti offcuts today, and it indeed seems quite stiff for its thickness, especially along the longitudinal axis.

    Not as much so in a twist type load though (45 degrees).  

    I guess this is due to the fibres in the ply faces running at mostly 0-90 axis - probably a trait of most ply's ?

    Perhaps a good laminate schedule and tabbing for it may be using a 45-45 (double bias) with the glass fibres making up for a lack of wood grain in this direction

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