Concepts has three different eraser tools: Slice, Hard Mask, and Soft Mask. Because Concepts is a vector app, they work differently than traditional pixel erasers. You can add them to your Tool Wheel from the brush menu.

Slice (Destructive)

The Slice tool is a destructive cutting tool. It permanently removes any stroke data it touches, splitting lines into independent new pieces. It is useful for trimming lines or erasing sketches. A slice can only be undone with the Undo command.

Hard Mask & Soft Mask (Non-Destructive)

The Hard Mask and Soft Mask are non-destructive masking tools. They hide your strokes with a masking stroke that you can select, move, and adjust just like any other stroke. The Hard Mask creates a clean, sharp edge, while the Soft Mask creates a soft, blended edge.

• Masks are applied to your current layer. If you are using Automatic layering, make sure you have the correct tool selected to activate the right layer. If you are using Manual layering, make sure the correct layer is active in the Layers menu.
• Pressure-sensitive styluses will affect the mask's size and opacity. You can disable this in Settings for uniform masking.

Important: Other vector editors do not support Concepts' masks. Exported masks will appear as white strokes. If you need clean exported lines, use Slice for your edits.

Troubleshooting

• If the mask isn’t working, check that you are on the correct layer and that the mask’s opacity is greater than 0%.
• If a mask used with a Shape Guide does not fully cover an area, try using your finger or disable pressure sensitivity in Settings.

Watch the Walkthrough Series: How to erase in Concepts.