Print at Dec 20, 2025, 2:44:18 PM

Posted by Keet at Jul 8, 2023, 2:11:14 PM
How-To create a round hole in a floor
To create a round hole in a floor without using a staircase you will have to create a "Hole" object.
(You will need the Furniture Library Editor.)

1. Draw a thin wall and set it's arc to 180°
2. Copy the wall, and after deselecting the previous wall paste it.
3. Rotate the pasted wall 180°
4. You now have a circle. Adjust the height of the walls so it's not too high
5. Export both walls as an object naming it something like HoleInTheFloor.
6. Import the HoleInTheFloor object in a Furniture Library. Set the Keywords for the object to 'Hole Floor' so you can easily find it in the furniture list using the search box. Set the category to Miscellaneous.
7. Check the "Staircase" property
8. Set the "Cutout shape (SVG)" to:
staircaseCutOutShape='M 0.5,0.5 l 0.5,0 A 0.5,0.5 1 1,0 0,0.5 A 0.5,0.5 1 1,0 1,0.5 z'
9. Save and import the furniture library in Sweethome3D

You can now use the HoleInTheFloor object from the Furniture List to create a round hole in a floor. Just resize it, change the height to the floor thickness, and elevate to your level height. You can of course create different holes by using thicker or thinner walls to create different HoleInTheFloor objects with different wall thicknesses.
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