22nd July 2010, 11:20 PM
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Senior Member
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Join Date: Jan 2009
Location: Near Cardiff
Posts: 742
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Just had a quick look at the book - end of SW1 is cut at 23 deg - which when you work out it comes to 90-23 = 67deg and not 71. Hence I think it may be SW1 you need to cut to 19 deg instead.
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