GstarCAD 2027 · Command Reference
Commands > T Command > TRIM
Function Description:
This command is used to trim an object to make it join with other objects.
To trim objects, users should firstly select
a boundary, and then press Enter to select objects to be trimmed.
Users can
make all objects to be boundaries by pressing Enter under the first prompt of
Select objects or \<select all>:.
Selects the boundary of objects to be trimmed or presses
Enter to select all displayed objects as potential boundaries. The TRIM command projects the boundary and objects to be trimmed into
the XY plane of the current UCS.
Note: If the selected boundary contains block, users can only use
the single selection, Crossing, Fence and Select all options.
Command Access:
Icon:
Menu: Modify > TrimRibbon: Home > Modify > Trim
Toolbar: Modify > Trim
Command: TRIM
Alias: TR
Command Prompts: The command line displays different prompt information according to the trim mode
Quick Mode:
Current settings: Project\=UCS, Edge \=None, Mode\=Quick
Select object to trim or shift-select to extend or
[cuTting edges/Fence/Crossing/mOde/Project/eRase/Undo]:
Standard Mode:
Current settings: Project\=UCS, Edge \=None, Mode\=Standard
Select cutting edges ...
Select objects or [mOde] \< select all >:
Select object to trim or shift-select to extend or
[cuTting edges/Fence/Crossing/mOde/Project/Edge/eRase/Undo]:
Specifies one or more objects to be used as a boundary for the trim. TRIM projects the cutting edges and the objects to be trimmed onto the XY plane of the current user coordinate system (UCS). In Quick mode, selecting an object that doesn't cross a boundary deletes the object instead.
Specifies that all objects in the drawing can be used as trim boundaries.
Specifies objects to trim. The prompt for selecting trimmed objects will repeat, so you can select multiple trimmed objects. Press ENTER to exit the command.
Shift-select extends the selected objects rather than trimming them. It provides a convenient way to switch between TRIM and EXTEND commands.
Uses other selected objects to define the boundaries to which objects are trimed.
Selects all objects that intersected with fence. The selection fence is a series of temporary segments, they are defined by two or more points. The selection fence does not form a closed loop.
Selects objects within and crossing the rectangular area. The rectangular area is defined by two points.
Note: If it is uncertain for some objects to be trimmed by crossing selected, the TRIM command selects objects along the clockwise direction from the first selection point.
There are two modes for trimming objects: Quick mode and Standard mode. The default trimming mode is set to Quick, which uses all objects as potential cutting edges. If set to Standard, this mode will prompt you to select cutting edges.
Uses the projection to trim objects.
Enter a projection option [None/Ucs/View] \<Ucs>:
- Ucs:
Specifies projection onto the XY plane of the current UCS. It trims objects that intersected with
the selected boundary on the XY plane in the current UCS. Objects without
intersection with selected boundary are not trimmed in 3D space.
- View:
Specifies projection along the direction of the current view. It trims objects that intersected with
the selected boundary in the current view.
Determines to trim the object at the intersection in 3D space or on its extended edge.
Enter an implied edge extension mode [Extend/No extend] \<No extend>:
- No extend: The selected object can be trimmed on the condition that they are intersected in 3D space.
Deletes selected objects. It provides a convenient way to erase needless objects without exiting the TRIM command.
Quits the latest change made by TRIM command.
Related References：
Related Tasks：
Article ID: 3494
Created: September 26, 2026
Last Updated: September 25, 2026
Author: kbadmin
Online URL: https://kb.gstarcad.com.my/article/trim-command-gstarcad-2027-3494.html
