[Public-List] Touch Wood update
Mike Lehman
sail_505 at hotmail.com
Sun Jan 24 17:28:15 PST 2010
That is very cool - don't you love it when something that you are so worried about turns out to be so easy?
Mike Lehman
><((((º>`·.¸¸.·´¯`·.¸><((((º>`·.¸¸.·´¯`·.¸><((((º>
> From: mainstay at csolve.net
> To: public-list at lists.alberg30.org
> Date: Sun, 24 Jan 2010 19:28:54 -0500
> Subject: [Public-List] Touch Wood update
>
> Good day friends,
>
> Saturday I helped a friend who is restoring a 5.5 Meter Class yacht
> steam in four ribs; the project was of particular interest to me since
> her ribs have the same dimensions as TW's. The steam bending of the
> 22 ribs TW needs has been the one thing I have never done before and
> doing it looked like a job I just couldn't get my arms around. I had
> been seriously considering laminating new ribs in place in order not
> to have to bend traditionaly.
>
> Doing four ribs took 15 minutes.
>
> I am not kidding. White oak becomes incredibly pliable after about 40
> minutes of steaming and we had about 30 seconds with each before they
> cooled and began getting stiff. I was totally amazed. I was also
> amazed at the lack of mystique in the steaming process. I have books
> and magazine articles here that run thousands of words on the 'proper'
> way to make a steam box... the importance of insulating it, additives
> to the water in the boiler, etc etc.
>
> We took a 3" dia piece of plastic plumbing and glued a cap on one end;
> we drove a nail into it then ripped it out to make a small hole. We
> took the cap for the other end and glued a 1/2" hose barb onto it. We
> ran the 1/2 vinyl hose into a second hand electric kettle and stuffed
> a rag around the spout.
>
> We milled appropriate lengths of white oak rib stock and put them into
> the tube, numbering them with pencil so we could tell which was which
> (they were destined for differing parts of the boat) Then we sat in
> the boat telling sailing stories for a while, occasionally adding
> water to the kettle.
>
> After almost an hour, we pulled the first one out and with gloves on
> carried it into the boat. The guy inside pushed each rib butt against
> the keel then pushed the rib against the hull; imagine the wine-glass
> shape of the hull as it turns down into bilge... With one foot holding
> the rib against the planking and a hand holding the upper part against
> the hull, the other guy drills pilot holes through the existing holes
> in the planks and into the rib. This is followed by bronze screws.
> Presto - new rib in about as much time it took to write this. I had
> my camera in my pocket to take pictures of the process but it was over
> so quickly I missed it. (well not really missed it - I was doing it
> but you know what I mean)
>
> We broke two while bending them... I had heard of this but was amazed
> that the breaks are not the dangerous oak snaps that I expected. It
> happens when the rib is pushed over into the curve and a line of grain
> just lets go and gently and smoothly separates from the rest. We
> quickly discarded the 'broken' one and whipped in a new one each time.
>
> The bending only takes a few pounds of force - crazy. Once they are
> cooled, the ribs are rock solid like they were grown that way. (not
> really quite as strong as grown frames, but nearly)
>
> I am so relieved. That was in my mind the toughest part of TW's
> return to health. Here's hoping the other challenges fall the same way!
>
> Gord
> #426 Surprise F 16 Touch Wood
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