# Cutting Parameters

Cutting parameters are the numeric values used to run a tool, such as spindle speed and feed rate.

They are often the first thing people look for — and for good reason.\
But on their own, numbers don’t tell the full story.

***

### Numbers only work with the right conditions

Cutting parameters only behave as intended when the **cutting conditions** match the assumptions behind them.

Things like:

* tool engagement
* entry and exit behavior
* cutting direction
* material contact

have a direct influence on how a tool behaves — even when the numbers stay the same.

Because of this, cutting parameters are never universal values. They are always tied to a specific situation.

***

### How this section is structured

This section breaks cutting parameters down into three connected parts:

* **Cutting Conditions**\
  Explains the assumptions behind parameters, such as engagement, entry, exit, and cutting direction.
* **Cutting Parameters Explained**\
  This part looks at the meaning of cutting parameters individually.
* **Preset Breakdown — CNC Reasoning**\
  Dissects a real tool preset using actual values, with short and focused reasoning.
* **Parameter Philosophy**\
  Explains the reasoning process I apply when selecting cutting parameters.
* **Applying the Parameter Philosophy**\
  Demonstrates how the parameter philosophy is applied using concrete examples.


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