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My uncle told me to always use a framing square for layout, not a speed square
He said it was more accurate, but I thought he was just old school. Last month I was laying out rafters for a shed roof and used my speed square like always. Cut all 12 pairs, went to put them up, and every single birdsmouth was off by about an eighth. Spent half a day fixing them. So, what's your go-to for rafter layout? Is the framing square really the only way?
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