> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ntop.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Slice Stack Boolean Subtract

## About this Block

The Slice Stack Boolean Subtract uses a list of slice stacks to remove from a primary slice stack. Slice stacks must have a uniform layer height to boolean.

## Example File

Download Example: [Slice Stack Boolean Subtract](https://storage.googleapis.com/files-learn/static/ExtendedBlockDocs/slice_stack_boolean_subtract.ntop)

*This file creates a slice stack of a sliced sphere stack subtracted from a sliced cube stack.*

![Slice Stack Boolean Subtract](https://storage.googleapis.com/files-learn/static/ExtendedBlockDocs/slice_stack_boolean_subtract.png)

***

Boolean subtract the slice stacks

### Inputs

| Name                     | Type                                                                  | Description                      |
| ------------------------ | --------------------------------------------------------------------- | -------------------------------- |
| Primary slice stack      | [Slice Stack](../../../../block-documentation/types/slice-stack)      | Slice stack to subtract from     |
| Subtraction slice stacks | [Slice Stack List](../../../../block-documentation/types/slice-stack) | List of slice stacks to subtract |

### Outputs

| Type                                                             |
| ---------------------------------------------------------------- |
| [Slice Stack](../../../../block-documentation/types/slice-stack) |