B is incorrect unless you are fixing a hole or low area.
Here is all the rationale.
1. Laying longest first avoids potential air entrainment at overlap edges in b and poor bonds.
2. Sanding thru b can result in sanding the stagger off completely.
3. Strength in fiberglass is not achieved by shingling or effect of shingling. The strength in fiberglass happens with thickness. People generally get the intuition wrong here.
There are a few times other than hole repair where you may consider the other way..if, for example building up 3 layers allows the 3rd layer to go over a ridge or rise, anytime we end up fairer, we'd go shortest first, but then caution to fill the voids is important, etc.
CS23 Build Config: Open Deck / Closed Transom
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- * Bateau Builder - Expert *
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Re: CS23 Build Config: Open Deck / Closed Transom
Wow, that was fun. I got a and b confused in my reply and had to go back and fix it twice!
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Re: CS23 Build Config: Open Deck / Closed Transom
Thanks heaps for that info.
I've already noticed how hard it is to get the air out, so it makes a lot of sense.1. Laying longest first avoids potential air entrainment at overlap edges in b and poor bonds.
Re: CS23 Build Config: Open Deck / Closed Transom
OK, I thought I had my head around it but now I'm beginning to question myself.
If someone would be able to clarify if I've got this right, it would be greatly appreciated.
So going by this lamination schedule:
The completed outer layers would look like this?
Also, where it mentions:
If someone would be able to clarify if I've got this right, it would be greatly appreciated.
So going by this lamination schedule:
The completed outer layers would look like this?
Also, where it mentions:
I assume fabric means biaxial cloth (as that is all I have on the BOM)?A. Hull Bottom: 2 layers fabric, inside and out
Re: CS23 Build Config: Open Deck / Closed Transom
Yes, fabric and cloth are interchangeable here in the states. Also, I see three other problems. fallguy caught one, the second is you did not carry the first layer of fiberglass cloth up the side the 152mm and the third is on the chine you only have one of the tapes wrapping the corner, you need to change the second one so it has a short side on the bottom and a long side up the side. As it is providing no strength to join. Well I hope that helps you a bit. Feel free to ask questions.
Tom
Tom
Restored Mirror Dinghy, Bought OD18 built by CL, Westlawn School of Yacht Design courses. LT US Navy 1970-1978
Re: CS23 Build Config: Open Deck / Closed Transom
Thanks Tom, I think I understand.
Is this more accurate?
(First layer of cloth would wrap 177mm up the side to ensure the 2 cloth layers are staggered)
Is this more accurate?
(First layer of cloth would wrap 177mm up the side to ensure the 2 cloth layers are staggered)
Re: CS23 Build Config: Open Deck / Closed Transom
It looks good. Tom
Restored Mirror Dinghy, Bought OD18 built by CL, Westlawn School of Yacht Design courses. LT US Navy 1970-1978
Re: CS23 Build Config: Open Deck / Closed Transom
I've just realised why some of the fabric doesn't wrap (as per the lamination schedule by Jaques) - the fabric isn't wide enough.
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Re: CS23 Build Config: Open Deck / Closed Transom
If you draw what you have now, we can tell you how to get to finish. Overlaps are part of life in bigger boats.
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