Offset, Fillet and Erase are Design Mode editing tools for refining geometry you have already drawn. Use Offset to create a parallel edge at a set distance (for example, to carve a corridor or a border zone out of a space), Fillet to round off sharp corners, and Erase Edge to remove objects and unwanted lines, including split-face lines.

The Offset Tool works on these objects:

On spaces, Flooring and ceilings, offsetting an edge splits the object, so you get a separate piece along the offset edge. This is a quick way to divide a room into a circulation strip and a usable zone.

Note: There is no large fixed minimum offset distance; small values down to your project tolerance are accepted. Entering 0, a negative number or text shows an Invalid input message.

The Offset Tool can offset more than one object in a single operation, which is useful when several adjoining spaces or slabs need the same setback. An offset preview shows where the offset will land before you confirm it.

The Fillet tool replaces a sharp corner with a rounded one. Use it to soften the corners of your geometry or to model rounded building forms.

Corners do not have to share one radius. The corner radius can vary, so you can use a tight radius at one corner and a wide sweep on another.

Tip: Fillet and chamfer also work on curved geometry and surfaces, alongside shell, offset and sweep. The Snaptrude Agent can build and edit this kind of geometry for you from a plain-language request.

Erase Edge is a universal tool for removing elements from the model, so you do not need a different tool for each kind of geometry. Select Erase Edge (E) in the top toolbar, then pick the object or line you want to remove.

Lines created with Split Face can be erased. If a split is in the wrong place, use Erase Edge on the split line to remove it, including split lines drawn as a multi-segment polyline.

Note: You cannot split through an existing split line. If you need the split somewhere else, erase the existing line first, then split again.