Toolpaths and Machining: Leads – Lead In & Lead Out Moves

Carveco Tutorial: Lead In & Lead Out Moves

Leads (also known as Lead In / Lead Out moves) define how the tool enters and exits the cut. These moves help avoid marks, tear-out, or burning at the edge of your final shape — particularly when profiling parts.

🔹 Activating Lead Moves

1. Create or open a Profile Toolpath.
2. Scroll to Add Lead In/Lead Out Moves.
3. Check the box to enable, and choose between:
   • Linear – Enters the cut in a straight path.
   • Circular – Arcs into the shape with a radius.

🔹 Lead Move Types

• Linear: A straight-line entry path, set at an angle (e.g., 45°).
• Circular: A smooth, curved entry with a defined radius for gentler motion.

🔹 Lead Configuration Options

• Distance: How far from the vector the move begins.
• Angle: (Linear only) Controls entry angle into the cut.
• Radius: (Circular only) Defines arc curvature.
• Lead Out: Optional exit motion using same style as entry.
• Overcut: Extends the tool beyond the final point for a cleaner finish.
• Automatic Positioning: Enabled by default — disable to manually select the start point.

🔹 Tips for Use

• Use Circular leads for smooth entry and reduced tool strain.
• Overcut can remove residual entry points but is often unnecessary with Circular leads.
• Manually adjust the Start Point if automatic placement isn't optimal.
• Avoid harsh directional changes with Linear leads to reduce dwell marks.

💡 Tip

If your machine hesitates during lead moves, try using Circular Leads with a larger radius (e.g., 10") to keep motion fluid and improve edge quality.

🔹 Common Lead Configurations

• Linear Lead-In: 1" distance at 45° angle.
• Circular Lead-In: 0.2" distance with 0.25" radius.
• Smooth Circular Entry: Use a 10" radius for seamless entry/exit.

Leads are a simple but effective way to improve surface finish, reduce tool wear, and enhance cut quality. Experiment with values to suit your material and tooling setup.