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Template for birdsmouth cut?

7.4K views 25 replies 6 participants last post by  Nealtw  
To make a pattern to cut those rafters by just place on edge 2x4 rafter material a little extra long from top plate to top plate . Lay a 1 x on the top plate and , against the to be rafter , to pencil mark the horizontal cut . With that same 1 x place it vertical against the top plate on the inside to mark the vertical cut of the bird's mouth . Without moving the rafter even a smidgen do this on both side walls .

OH , if the walls have some discrepancies in distance wall to wall each rafter can be marked this way .