They are the places where rigidity is important. Essentially a thick skin on a hollow or low strength core.
On 5 Jun 2018, at 2:50 pm, Doug Haines doha720@yahoo.co.uk [harryproa] <harryproa@yahoogroups.com.au> wrote:I used carbon uni in my cross beams and rudders.As per plans for Elementarry.Doug
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Posted by: Rick Willoughby <rickwill@bigpond.net.au>
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