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Start › D Command reference › Trim or extend one / two elements

Trim or extend one / two elements

Purpose

Unlike Trim these two tools do not require an existing intersection: they work with the extensions of the elements and bring them to the common intersection — shortening if an element overhangs, extending if it is too short. This is the fastest way to make a clean corner from two lines.

  • Trim one element changes only the first clicked element; the second one is the reference and stays unchanged.
  • Trim two elements changes both elements up to the common intersection.

The tools take lines and arcs. Circles are rejected: Circles: split first, then modify the arc.

Access

  • Ribbon: group Modify, triangle on the button Trim — Trim one element (4), Trim two elements (5).
  • Classic toolbar: drop-down triangle of the family Trim (1).
  • Command search : Trim one element, Trim two elements.
Family «Trim» with (4) Trim one element, (5) Trim two elements
Family Trim with (4) Trim one element, (5) Trim two elements

Trim / extend one element

Trim one element Two clicks:

  1. Click the element to modify — on the side that should stay (1). The status line asks Trim one element: click the reference element (stays unchanged).
  2. Click the reference element (2). The first element is extended or shortened to the intersection with the reference; the reference stays as it is.
(1) the horizontal line on the side that stays, (2) the reference — the line grows to the intersection
(1) the horizontal line on the side that stays, (2) the reference — the line grows to the intersection

If the click hits no element, the status line reports No element at the click point (line/arc) or No reference element at the click point.

Trim / extend two elements

Trim two elements Also two clicks, each on the side that should stay:

  1. Click the first element (1) — Trim two elements: click the 2nd element (on the side to keep).
  2. Click the second element (2). Both are extended or shortened to the common intersection — a corner results.
(1) first, (2) second line, each on the side that stays — both meet in the corner
(1) first, (2) second line, each on the side that stays — both meet in the corner

For arcs the intersection of the full circle with the other element applies; circles must be split first (Circles: split first, then form the corner with the arc).

Options and relations

  • The tools stay active until you press Esc (ESC: finish in the instruction bar).
  • Parallel lines have no intersection — then nothing happens.
  • Dimensions on the changed element follow the new endpoint; hatches are re-bounded.
  • If the corner should be rounded or bevelled instead of sharp, use Fillet or Chamfer directly — both shorten or extend the lines as well.

Related commands

Related topics