What this is about

We live by the D'Entrecasteaux Channel in Southern Tasmania. It, and much of the Tasmanian coast, offer amazing cruising possibilities. Previously, we owned an old, sturdy and fast 33 ft Huon pine sloop that we loved. The things it didn't offer - easy portability to other waters, shoal draft, beachability and the simplicity of dinghy-like sailing - are the things we gradually craved more and more.
For at least a few years I have thought that I should build an open, or mostly open, 20-something footer that would satisfy these urges. After much looking around at designs, we finally settled on the Stir Ven.
She is beautiful, fast, seaworthy, floats in 25cm of water and is designed as an adventure boat on which one can spend a few nights.
We hope she will be ready for use by the summer of 2012/13!

Friday, January 6, 2012

brass protective strip

The last job to do before turning the hull over was to attach the brass strips to the bottom of the hull to protect from abrasion. I bought 19mm half-oval brass strip at great expense and the cringed at the thought of putting holes in my hull to screw it on. I talked to a few people who recommended an adhesive called fixtech 190 that would be better than screws, which I believed, but I still needed some way to hold the strips down while the glue cured.
So, in the end, I bit the bullet and used screws through the brass to hold it in place and used fixtech 190 as a glue/bedding compound (it is very flexible stuff).
I wanted to have no plywood, especially end grain, exposed to the elements so i did it this way. I drilled and counter sunk all my holes in to the brass strip (400mm apart). I then used self-tapping screws to attach the strips to the boat. I removed all the screws and the strips. I then drilled 10mm holes using the hole left by the screw as a guide. these holes were went in approximately 12mm into the 16mm plywood of the sole.


 I then mixed some bote-cote epoxy with TPRDA and used a pipette to fill each hole and allowed the stuff to soak into the grain then I sucked the excess out. I then filled the hole with silica-thickened epoxy


 and before it was fully hard, cut it flush and drilled holes about 10mm deep in their centres. These were then used to attach the brass strip using silicon bronze wood screws and fixtech 190.
A tedious process but I feel secure knowing that there's no plywood exposed at all.

4 comments:

  1. Hey,
    I'm Fred, another Stirven's builder.
    Congratulations for your present work.
    I hope the following stages will be good !

    Good luck

    Fred from Quimper in Brittany, France
    http://petole.canalblog.com

    ReplyDelete
  2. Hi Fred,

    thanks for looking at my blog. I'm a bit bad at keeping it up to date but I have been working hard recently doing the floors and filleting and fibreglassing bulkheads. THis is a boring part of the building.

    I already had seen you blog and heard about your boat Linotte. I hope you have lot's of good times on your boat

    cheers,
    Stan

    ReplyDelete
    Replies
    1. Great work Stan,

      Tried to send a reply before maybe it doesn't show as i am logged on as private blogger/
      Hope to chat with you as I"m gearing up to build a Stir Ven too!
      Hope this reply goes thru.
      Cheers,
      David

      Delete
    2. Hi David, sorry I never replied to your comment. I never saw it until now going back through my blog. Have you built your stir ven? Stan

      Delete