Support

As evidenced by over 30 years of development history, trust-worthy Korean CAD, CADian!

Utility Archive · 2026.02.24
[Lisp #55] MBK : Trim Inside (Keep Boundary)

Hi,

This is CADian.

We have prepared 400+ Lisp programs to aid your CAD experience, free of charge!

Full List of all CADian Lisps : [Full CADian Lisp List]

How to Install : [CADian Lisps Download & Install Guide]


====================================================


1/ Command :

  • MBK



2/ Description :

This tool allows you to Break (Cut) or objects within a specific area (Rectangular or Circular). It is highly useful for cleaning up overlapping lines or removing geometry inside a boundary.

  • Three Modes:

  1. Rectangle Mode: Draw a rectangle; everything inside is deleted (the rectangle remains).

  2. Circle Mode: Draw a circle; everything inside is deleted (the circle remains).

  3. Batch Mode: Select multiple existing rectangles, and the tool deletes everything inside all of them at once.



3/ How to Use :

  1. Type MBK in the command line and press Enter.

  2. Choose an option (1, 2, or 3):

  • Option 1 (Rectangle): Click two corner points to define a rectangular area. The content inside is removed.

  • Option 2 (Circle): Click a center point and define a radius. The content inside is removed.

  • Option 3 (Existing Rectangles): Select multiple existing rectangle objects. The content inside all selected rectangles is removed.





Added to cart.

VIEW CART

Please sign in first.

JOIN