I am pretty new to sketchup and am using it to drawing a tiny house my wife and I are building. I am at the point where I need to cut out the framed rough openings in the plywood sheathing. The plywood is flush with the outside of the framing.
I have tried drawing a cube the shape of the rough opening and using the trim tool to subtract it from the sheathing. This method only works for the first cutout, and then I get an error that the sheathing is no longer a solid.
I am also trying to select the shape of the rough opening and push the near face of the plywood flush with the far face to essentially delete my selection. This method works fine as long as I am drawing lines on the face of the sheathing as per the screenshot below.
But if I try using the inferences of the rough opening geometry, it attaches my lines to the framing. Also show in the screenshot below.
I would like to accomplish this like Michael Janzen does here in this video: