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[Floor Plan] Use the Floor Opening Tool to Draw the Hole

Reading time of this article:0 minuteUpdated 2026-04-07

Draw openings on floor slabs or ceiling slabs for void spaces, stair openings, etc., and the contours of the openings can be edited for better design effects.

⭐Before reading the article, it's recommended to watch the video tutorial first to get started quickly~

For Users

All users

Entrance

Click Floor Opening in the left toolbar on the floor plan page.

Draw Openings

1. Enter the openings drawing page, click the bottom-left corner 2D to select the location of the opening. Choosing Plane creates openings in the floor slabs, while choosing Top Face creates openings in the ceiling slabs.

2. Use shape tools such as Line, Arc, Rectangle at the top to draw the openings. You can create multiple openings at once. After completing the drawing, click Finish in the upper-right corner to successfully generate openings.

Edit Openings

1. Select the opening you want to edit and click Edit in the floating window to enter the editing interface.

You can only edit one opening at a time to ensure the opening is unique.

2. In the top toolbar, you can choose different tools to edit the opening contour.

When selecting the Split tool, the original contour line can be divided into multiple segments, making it easier to adjust the shape as needed.

When selecting the Merge tool, the segmented contour lines can be merged back into one piece, facilitating overall movement and size adjustments.

When selecting the Align tool, contour lines not on the same horizontal plane can be quickly aligned to the same straight line.

3. You can also use the Fillet to adjust contour shapes, supporting a variety of modes like Fillet, Inner Fillet, Inner Right Angle, Chamfer. Here are two chamfering methods:

Method 1: Directly select an area to apply chamfering

Click Fillet in the top toolbar, choose the desired mode, and directly select an area. You can move the mouse to edit the chamfer, When moving the mouse to the appropriate position, click the left mouse button to confirm.

You can also enter the Fillet Radius to edit the chamfer. After inputting, click the Enter key to confirm.

Method 2: Select two connected straight lines to chamfer the angle

Click Fillet in the top toolbar, choose the desired mode, then select two adjacent straight lines. You can move the mouse to edit the chamfer. When moving the mouse to the appropriate position, click the left mouse button to confirm.

Note: Inner Fillet can only be applied to right angles, and cannot be applied to other angles.

You can also enter the Inner Fillet Radius to edit the chamfer. After inputting, click the Enter key to confirm.

4. After editing, click Finish in the upper-right corner, switch to 3D view to check the effects.

Delete Openings

There are two methods to delete openings:

Method 1: On the floor plan interface, click the opening and then click the Delete button in the floating window.

Method 2: Enter the opening editing interface, click the opening, and then click the Delete button in the floating window.

Notes

1. Only closed contours can generate openings during drawing.

2. While editing already drawn openings, keep the closed contour unique.

3. During alignment operations, choose the reference position first, then select the line segment to move.

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