Step 4.1: Sketch-Loops and Merged-Points

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Step 4.1: Sketch-Loops and Merged-Points


This topic describes how to use the Part-Editor to add a sketch-loop.

A Sketch-Loop is a closed chain of sketch-elements. The sketch-elements are added end to end. All Points are Merged-Points* - see exceptions below

A sketch-loop is not an element. It is a derived element name.

We can add a Profile to a sketch-loop, and a Hole through a Profile.

*When a Point at the end of one sketch-element is merged with a Point at the end of a different sketch-element: we say the Points are Merged-Points.

You can do this automatically as you add the sketch-elements, or you can use the command: Geometry toolbar > Merge-Points.

Sketch-Loop that is NOT a Sketch-Loop:(!)

You can not add a Profile if

you merge three or more Points to be one Point – this is a Branch Point

sketch-elements cross over each other - this is a Figure-of-Eight

sketch-elements touch each other - this is Zero-Thickness

Example Sketch-Loops


1: A Circle

The simplest sketch-loop.

Used for a Cam-Follower Roller.

See Also: Cam-Follower


2: Lines

A general polygon.


3: Lines and Arcs

General Shape.


4: Arcs and Arcs

General 'free-form' , 'lozenge' shape

Add Sketch-Loop with HOVER


STEP 4.1 : Add Sketch-Loops