[Public-List] Touch Wood update
Gordon Laco
mainstay at csolve.net
Mon Jan 25 07:07:48 PST 2010
Hi Stephan -
The tube is five feet long. The new ribs replace the deteriorated
lower portions of the old ribs... sisters will support the joints.
G
On 25-Jan-10, at 9:54 AM, Stephan Andree wrote:
> Hello,
>
> thanks for sharing this experience - I am curious, how long is the
> plastic
> pipe steamer approximately that you were using ?
>
> thanks, Stephan
>
> On Sun, Jan 24, 2010 at 7:28 PM, Gordon Laco <mainstay at csolve.net>
> wrote:
>
>> 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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