To Add a Mask Block

Use this procedure to add a new mask block that has the properties specified in the mask block tool that you select. You can add a mask block to a drawing if the drawing contains a mask block definition.

Tip: When you add mask blocks to your drawing, insert them on a separate layer. You can turn the layer off in 3D views, where the mask blocks no longer mask any objects.
  1. If you have created your own mask block definition, create a tool from it.
  2. If you are working with an existing mask block tool, open the palette it is located on.

    A mask block tool is located on the Drafting tool palette and in the Drafting Tools category in the AutoCAD Architecture 2024 toolset Stock Tool catalog. You can add this tool to any tool palette.

  3. Select the mask block tool on the palette.
  4. Specify the insertion point of the mask block.

    You can move or hide the Properties palette to expose more of the drawing area.

    Note: If you are using a mask block to mask a wall, the mask block must be located at the baseline of the wall (Z = 0). Even though the wall components are at different heights, the plan display representation draws them at the height of the baseline, as they would be drawn on paper.
  5. Continue adding mask blocks, and press Enter.

    The mask blocks are displayed in the drawing at the insertion point you specified. To use a mask block to clean up or correct an object in the drawing, attach the object to the mask block.