This isn't really a gate just to block off a gap but same principle. I had to join a small bit of decking to a longer bit so I put a piece horizontal to brace it then a diagonal bit. How do you cut the diagonal bit perfectly? I placed piece where I wanted it to go. I then marked with a pencil where to cut it. Is that the way? The angle is never exactly 45 degrees so free hand it with chop saw lining it up
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View attachment 177425