Milling Monday: ⚙️ Mastering the Passes Tab in Fusion 360 Milling Toolpaths

Welcome to Milling Monday! In this critical tutorial, we dive into the engine room of any successful CNC milling operation in Autodesk Fusion 360 CAM: The Passes Tab.

The Passes Tab is where you define how the tool removes material—controlling everything from stepdown ($a_p$), stepover ($a_e$), and finishing quality. Mastering these settings is essential for achieving efficient cycle times, maintaining tool life, and hitting tight tolerance requirements.

🎯 What You Will Learn in This Video:
-Maximum Roughing Stepdown (A_P):
-How to calculate the ideal axial depth of cut for your end mill, balancing material removal rate with spindle stability.
-Optimal Stepover (A_E):
-Understanding the relationship between radial stepover and chip thinning, and how to use it for maximum tool longevity and efficiency (especially for high-efficiency milling).
-Finishing Passes: Learn how to add dedicated finishing passes, control side stock for light cuts, and ensure a smooth transition from roughing to finishing.
-Multiple Depths: How to use this feature to divide deep cuts into safe, manageable steps, and how it differs from a simple Stepdown setting.
-Order and Sequencing: Control the order in which Fusion 360 executes multiple passes, crucial for thin-walled parts and avoiding deflection.
-Tips & Tricks: Hidden settings within the Passes Tab that can eliminate cutter marks and improve your overall surface quality.

Stop using the default settings! This guide will empower you to take complete control over your milling strategy, leading to better parts and happier tooling.

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00:00 - Intro
31:30 - Drill Heights
37:00 - 4th and 5th Axis Heights