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About lenm

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  1. Some more progress! Most ribs are going down easily, however a couple needed some steaming. I used an old pressure cooker heated on a portable gas bbq. There is a car radiator hose outlet which feeds steam to a plastic bag tube (vacuum sealer bag roll) I based it on this method. link below. brilliant !
  2. Thank you PAR ! Thats a great starting point
  3. 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
  4. very nice sir ! thanks for sharing the pics.
  5. Lowered the keel down into the bulkheads today and it all aligns perfectly! The lasts few bulkheads going up at the moment and stringers. The fish have been on which is slowing progress..
  6. 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 :-)
  7. CNC ! - I envy you guys only mylar option for overseas builders Im finding motivation is the most important. Often I slip into the overalls at 8pm for a date with Goo (epoxy) and a scotch in the other hand.
  8. 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!
  9. 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
  10. Looking really great! Are the rib bands are a darker timber/different species to the planking? I know the feeling re heat - my progress is slow also.
  11. Howard/Thrillsbe, your woodworking is a work of art! Thanks for sharing your experience with the plywoods. Incidently, I tracked down the source of the Dragon variant. Looks to be of Indonesian origin. Considering everyones suggestions, im happy to make a decision now. Going with mostly okoume (to save weight) though using the red meranti in a few select areas (for toughness/durability and looks!) such as the bottom. Hoop pine keel and ribands.
  12. Great work - given you rate of progress, could this be the first OC 256 to be launched? :-)
  13. Great thread alright. I sincerly appreciate your detailed responses Graham, PAR and others, you have been most helpful.
  14. Hi Alex, yep building a small boat (Ocracoke 20). Everywhere I read on Australian sites recommends not to substitute AS2272 ply with BS1088 (see below example - last line). But to pay over $260 for a piece of 12mm hoop pine vs $124 for a reputable Meranti is a huge difference, which leads me back to my original query being is the local product THAT much better, or just a case of our expensive local manufacturing costs.. Marine Plywood Marine plywood manufactured to AS/NZS 2272 Plywood – Marine is a purpose built structural plywood, intended for use in hulls of boasts and other marine application and also in aircraft construction. It has a permanent Type A Phenolic bond and is manufactured from selected species based on density, bending strength, impact resistance and surface finishing characteristics. None of the marine species are naturally durable and preservative treatment of marine plywood used in some marine environments. Marine plywood to AS/NZS 2272 is made from selected species and therefore has known and consistent structural properties. The assigned stress grade of plywood manufactured to AS/NZS 2272 is F14. Marine plywood to AS/NZS 2272 has two A grade faces and a Type A bond. In the Australian / New Zealand Standards grading system it therefore has a grading of AA‐A bond Note that marine plywood manufactured to BS 1088, as imported into Australia, does not have predictable structural performance and must not be substituted for AS/NZS 2272 marine plywood. For assured performance marine plywood should be branded with the ‘EWPAA Tested’ marine plywood stamp.
  15. The Sapele sounds like a nice option for finishing the transom! I purchased a couple of sheets today of the Meranti for assessment. It is the Hydrotek brand. Has anyone tried this? Certainly looks ok as far as finish and voids go. Might do a boil test with it.