If you’re talking about the line down the center of the board, you just have to make sure it’s parallel with the sides of the board and centered on the pipe… otherwise the placement of the square is all dictated by the walls and the pipe lol
The bigger issue I always have with videos like this is that all their reference surfaces appear to be perfectly square, and that’s just almost never the case when doing house projects. Now, I’m sure the overall principles behind a technique like this are probably the same regardless of whether the reference surface is square, but there would probably be extra step/measuring involved to achieve the same result.
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u/Thefuzy 2d ago
Like this is some gotcha? He would simply just start with 2 vert side lines and then use the compass, it would be way simpler than what is shown here.