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 Rank: Pro Groups: Joined: 24/08/2009 Posts: 48,827 Points: -13,348
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I don't know if anyone's asked this before, but I’m having a big problem with bevelling the frames (Issue 17), which is practically finished. Using a baton along the line of the middle deck, I find there’s a pretty even smooth curve all the way back from frame 20 to the counter, which I’ve now planked and rubbed down. But when I slide the baton down to lower deck level I find that either frame 22 is sticking out too much - nearly a millimetre - or frame 26 doesn’t project enough, and as I go lower the discrepancy continues. Same problem on both sides of the hull. I’m not sure if frame 22 is sticking out too much, or 26 not enough. But I can see that when I raise the baton higher still, to upper deck level, there’s a pronounced change of profile: instead of continuing to curve in towards the stern, the baton begins to straighten out. So the discrepancy might have something to do with a change in shape towards the stern. The question is: what do I do when I plank this area? Do I try to plank in a smooth curve? That will mean that the plank isn’t attached to frame 26. Or do I attach (and pin) the plank to 26 as well, even if that makes a pronounced dent in the hull? That sound bad practice too, so I’m not sure how to proceed. I wondered about taking more off frame 22, or trying to build up frame 26. Can anyone suggest anything? Glad of any help. cec 
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Rank: Pro  Groups: Registered
Joined: 06/12/2012 Posts: 152 Points: 439 Location: Barrow-in-Furness Cumbria
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hi neo. i made the mistake of planking over the discrepancy. i will need to use some filler to fill the "dent" if i were you i would certainly build up the frame prior to planking. there has been some discussion around this area already and if you look through the discussions there are some pics as well. Hope this helps and good luck. Stu Cheers Stu
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Rank: Pro Groups: Joined: 24/08/2009 Posts: 48,827 Points: -13,348
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Hi Stuje,
Thanks for the advice. Just saw your comment. I noticed the string under 'Hull Profile' just after I posted the query - lots of minds all exercised by the same problem! I followed the advice I saw there, and added an extra strip to the key section of frame 26. It went on quite well, and I'm now planking, so we'll see how it all turns out. I'll post a picture when I get the hang of 'Photobucket'. The extra layer of bamboo is causing a little trouble when I push in the pins. I find I'm having to drill through the added layer into the frame to get the pin in comfortably, but it looks good so far. Touch wood!
Bye. C.
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Rank: Pro Groups: Joined: 24/08/2009 Posts: 48,827 Points: -13,348
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As you are finding, you'll now struggle with every pin into a second bamboo thickness. Have you tried drilling the plank, then position and drill the rib bamboo thickness, which will ease the pin.
You could have used a couple of the basswood second planking strips to line the rib edge, glued together (if you have received them yet) as there is spare.
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Rank: Pro Groups: Joined: 24/08/2009 Posts: 48,827 Points: -13,348
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Dear Mr Tomick,
Thanks for the helpful advice. I lined frame 26 with a strip of bamboo, well sanded down, with Ronseal at the ends, and I've now planked right down to plank 5, so I reckon I'll have to carry on. As to pins: what I currently do is to make a dry run, mark the pin holes, drill the strip and then glue and pin. I haven't the confidence in my own accuracy to predrill frame 26 at the same time. If I got it even a fraction wrong it would throw the whole strip out. So I wait till everything seems secure and then drill down. So far it's working. But I can tell there are squalls coming. What I'm wondering at the moment is how to get the little pointed ends of the garboard strakes to stay in place while the glue is setting - elastic bands, perhaps.
With many thanks,
CEC
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 Rank: Semi-Pro Level 2  Groups: Registered
Joined: 10/09/2012 Posts: 81 Points: 226 Location: Worcester
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Map pins seem to be the favourite choice for holding down the tapered planks. That's what I used and its worked quite well. Paul Building - Sovereign Of The Seas
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Rank: Pro Groups: Joined: 24/08/2009 Posts: 48,827 Points: -13,348
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Thanks Paul. I think I may have a set somewhere - buried, of course. So far I've been getting by with strong elastic bands and Scotch tape! Regds C
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