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using speed square

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  • using speed square

    I must be getting old. I have forgotten hoow to use a spped square.I am making a gun cabinet.I need to cut a piece of 1/2 oak plywood. It is 8 inches wide and 13 1/2 long. I need to keep the 131/2 on the bottom side with the30 degree.ending on the corner. I have spun the square a dozen different ways until i almost ready to start a bon fire. I still havn't got it to work. I have done this before I'm just having a little trouble remembering how.

    When you hit rock bottom the only answer is to look up

  • #2

    I am sure you know a speed square is for rough framing lumber, and not for fine woodworking.

    But anyway:

    a rise of 7 inches over a 12 inch span is really 30.26 degrees. While 6 15/16 inch rise over 12 inch span is 30.03 degrees.



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