CBRK & CBRKA – Break a Circle or Arc into Equal Parts (Free AutoCAD LISP)

11th August 2026

FREE AUTOCAD LISP

CBRK & CBRKA — slice circles and arcs into equal segments

CBRK asks one question — how many sections? — and slices every selected circle into that many equal arc segments with radial lines, like cutting a pizza. The original circle is replaced by the pieces.

Its twin CBRKA does exactly the same for arcs. Both remember your last section count.

CBRK free AutoCAD LISP breaking a circle into equal pizza-slice segments

How to use it

  1. Unzip, then load either .lsp with APPLOAD.
  2. Type CBRK for circles, CBRKA for arcs.
  3. Select the circles or arcs, type the number of sections. Done.

Good to know

Works on Circles (CBRK) and arcs (CBRKA)
Output Equal arc segments plus radial lines, on the source object’s layer
Remembers Your last section count as the default
Commands CBRK, CBRKA

Take it further — measure and split areas automatically

Divide Area for AutoCAD - product boxDivide Area add-on slicing an AutoCAD shape into equal strips

Divide Area
Split any closed shape into pieces of equal area – by number, by distance, a set area or a free cut.

See Divide Area — $21.90

Area Measure for AutoCAD - product boxArea Measure add-on numbering AutoCAD polygons and inserting a totalled area table

Area Measure
Measure closed shapes in any unit, number them, and get a totalled area table – annotative text supported.

See Area Measure — $21.90

Voronoi Generator for AutoCAD - product boxVoronoi Generator filling a closed AutoCAD polyline with organic cells

Voronoi Generator
Fill any closed polyline with Voronoi cells – exact spacing, edge distance and rounding, live preview.

See Voronoi Generator — $24.90

This tool is part of our free AutoCAD LISP collection — 20+ routines, all free, all tested on real projects.