- Select the object from which you want to subtract other objects.
- Select the objects you want to subtract.
- From the Layout menu, select Merge Polygons > Subtract.
The new object retains the name, color, and material of the first object selected.
Union and Intersection operations support using selected objects on multiple layers, and each layer object is operated on separately. However, Subtraction is only allowed if the selected objects are on the same layer. Selected objects may be negative objects.
- If only negative objects are selected, the merge operation is performed the same as with positive objects, but the resulting objects remain negative objects.
- If both negative objects and positive objects
are selected:
Complete the union/intersection/subtraction operation on the positive objects
Always union the negative objects
Subtract the negative object result from the positive object result
Note:
By default, the objects being subtracted on the first object selected are not preserved for later use. If you want to keep a copy of the objects being subtracted on the first object selected, do the following:
- Copy the objects, then paste them back into the design after subtracting them.