Step 4.1: Sketch-Loops and Merged-Points

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Step 4.1: Sketch-Loops and Merged-Points

Sketch-Loops.

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

A Sketch-Loop for a Profile is a closed chain of sketch-elements. The sketch-elements are added end-to-end - see exceptions below

All Points are Merged-Points* -

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 to a sketch-loop to cut 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 Merge-Points automatically as you add the sketch-elements (fastest and most convenient), or you can use the command: Geometry toolbar > Merge-Points.

¥  - The start-Point or end-Point of a sketch-element


EXCEPTIONS - Closed chain of Sketch-Elements but NOT Sketch-Loops:

three or more Points are merged to one Point – this is a Branch

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

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


Example Sketch-Loops

GST-4-1-0-AddCircle

1: A Circle

The simplest sketch-loop.

Used for a Cam-Follower Roller.

See Also: Cam-Follower


GST-4-1-2-AddLine

2: Lines

General polygon.

GST-4-1-2-AddLine

3: Lines and Arcs

General shape.

GST-4-1-3-Arcsx4

4: Arcs and Arcs

General free-form , lozenge shape

Add Sketch-Loop with HOVER

TUTORIAL 4

STEP 4.1 : Add Sketch-Loops