Break Lines and Polylines Instantly in AutoCAD — Manual Tricks and Full Automation

Ever felt frustrated repeating the same steps just to break or split objects in AutoCAD? When working with complex drawings, intersections, and multiple polylines, manual editing quickly becomes slow, repetitive, and error-prone.



🔧 The Classic BREAK Command — and a Hidden Polyline Trick

The most familiar tool is the BREAK command. Simply type BR, select a line, arc, or polyline, and choose two points to remove a segment. You can also pick a single point to split an object into two parts.

💡 Hidden Polyline Trick: "Break at Point"
  1. Activate BREAK command, select the polyline
  2. Click the exact point where you want to split
  3. When asked for second point, type @ and press Enter

Result: Polyline instantly divided into two clean, editable parts — no guessing, no extra clicks.


❌ Why Manual Breaking Isn't Enough

This works well for one or two objects. But what if you have dozens of polylines intersecting each other? Repeating the BREAK command again and again becomes tedious and wastes valuable production time.

AutoCAD doesn't provide a built-in tool to automatically break multiple polylines at all intersections — and that's exactly where automation changes everything.


🚀 FREE AutoLISP Solution - BreakPline.FAS

Meet BreakPline.FAS — a lightweight but powerful AutoLISP program designed to break selected polylines automatically at every intersection, in just seconds.

📥 FREE Download: Watch & Download File From Description

📋 Load: Use APPLOAD command
▶️ Run: Type BrPl at command prompt
⚡ Select: Pick polylines to process

The routine instantly:

  • Breaks all intersections automatically

  • Places broken geometry on dedicated layer BrokenLines

  • Keeps original polylines organized and clean

⚡ Perfect for Productivity-Focused CAD Workflows

  • Surveying

  • Utilities

  • Road layouts

  • Electrical plans

  • Any drawing with heavy intersections

What used to take minutes — or even hours — now happens in seconds.


💼 Need Custom AutoLISP Solutions?

If you need more custom AutoLISP automation to simplify your AutoCAD workflow:
📧 cadsuperuser@gmail.com
Send a sample drawing and explain your requirement — we'll be happy to help.