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- If necessary, change the workplane back to By World. You may have changed the workplane while creating one of the blocks, but the workplane must be along the bottom of the walls.
- Activate Insert Opening, and make sure Anchor to Wall is selected. (Anchor to Roof or Roof Slab is similar, except that openings will tilt themselves to fit along a sloped roof.)
- Drag the opening to one of the walls. The block is dragged by its reference point, which can be changed if needed. See Editing a Block
- The block aligns itself to the wall, and cuts the opening.
5. Drag more blocks onto the walls. The block will change its alignment to fit any wall.
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Note: This tool only creates rectangular cutouts, even if the block is non-rectangular. You can change this by modifying the block. See Edit Opening Modifier
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