AutoCAD Modify Commands: The Complete Guide
Introduction
AutoCAD’s Modify commands are the editing tools that allow you to refine, adjust, and clean up your drawings. From removing unwanted geometry with ERASE to reshaping corners with FILLET, these commands are the backbone of efficient drafting. Every professional AutoCAD workflow depends on them.
This page lists all of the Modify commands currently available on CAD Master Coach. Each command includes a short explanation and links to detailed tutorials so you can learn step by step.
Break
Cut objects into separate pieces with BREAK. Learn pick points, specify gaps, and common use cases.
Chamfer
Learn how the AutoCAD CHAMFER command creates beveled corners using distance or angle options. Includes trim behavior, common mistakes, and best-practice tips.
Copy
Learn how to use the AutoCAD COPY command to duplicate objects quickly and accurately using base points, multiple copies, displacement options, and time-saving shortcuts.
Erase
Learn how the AutoCAD ERASE command removes objects from a drawing. Covers selection methods, shortcuts, common mistakes, and when ERASE is better than TRIM or DELETE.
Explode
Use the AutoCAD EXPLODE command to break blocks, polylines, and hatches into editable objects. Learn when to use it—and when to avoid it.
Extend
Learn how the AutoCAD EXTEND command works to lengthen lines, arcs, and polylines to boundary edges. Includes boundary selection tips and common mistakes.
Fillet
Learn how the AutoCAD FILLET command rounds corners using radius control. Understand trim behavior, common issues, and professional drafting workflows.
Join
Combine lines, arcs, or polylines into single objects with JOIN. Tolerances and cleanup tips.
Lengthen
Learn how to use the AutoCAD LENGTHEN command to extend or shorten lines and arcs with precision. Explore Delta, Percent, Total, and Dynamic options with step-by-step examples.
MatchProp
Use the AutoCAD MATCHPROP command to quickly copy layers, colors, linetypes, and more between objects. Learn filters, tips, and common mistakes.
Mirror
Learn how the AutoCAD MIRROR command creates symmetrical copies across an axis. Control erase options, precision alignment, and common drafting workflows.
Move
Learn how the AutoCAD MOVE command repositions objects using base points and displacement. Includes OSNAP tips, selection strategies, and common mistakes.
Offset
Use the AutoCAD OFFSET command to create precise parallel lines, arcs, and polylines. Learn distance settings, side selection, erase source, and common mistakes.
OOPS
Learn how the OOPS command in AutoCAD restores the most recently erased objects without undoing other work. Examples, history, and best practices included.
Pedit
Learn how the AutoCAD PEDIT command actually works. Understand join, width, vertex editing, fit vs spline, and converting lines to polylines—without trial and error.
Rotate
Rotate entities around a base point to precise angles. Reference options and best practices.
Scale
Scale objects by factor or reference. Maintain proportions and avoid common scale mistakes.
Stretch
Learn how to use the STRETCH command in AutoCAD. Includes selection rules, step-by-step example, practical applications, troubleshooting tips, and best practices.
Trim
Learn how the AutoCAD TRIM command cuts objects to boundaries. Understand Quick mode, classic selection, implied edges, and common trimming mistakes.
Frequently Asked Questions
They are the tools used to edit, move, reshape, or delete existing objects in a drawing.
It’s technically a Modify command but is often used to create new geometry from existing objects.
They are in the Home tab of the ribbon, under the Modify panel.