The Objective of this Step
In this step, we open the Part-Editor to edit the length of the Part.
Our objective in this step is to learn the many different methods to do each action.
Summary of this Step
•Start the Part-Editor – with different methods
•Edit the Length of the Part – with different methods
•Close the Part-Editor – with different methods
Part that rotate can represent many Machine components
It may seem that a Part can only represent a machine component that has a 'finite' length - for example, a lever.
However, it can represent a machine component that has zero(0) length - for example, a shaft.
Video
Use one of the methods detailed below to edit a Part.
METHOD 1: Use the Selection-Window - most recommended
 Click the Part-Outline...
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STEP 1: Click the Part-Outline
1.Click the in the graphic-area ONE-TIME - see image
- or -
1.Click the Part element in the Assembly-Tree ONE-TIME
In the graphic-area, if the Part-Outline is near to different elements, we may also click those different elements also.
All of the elements we click show in the .
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STEP 2: Edit the element from the Selection-Window
1.Identify the element in the
In this case, we want to edit the Part element (to start the Part-Editor)
2.Right-click the Part element in the Selection-Window
A contextual-menu shows near to your mouse.
3.Click Edit Element in the contextual-menu |
METHOD 2: Double-click

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STEP 1: Double-click a
1.Double-click the Part-Outline in the graphic-area - see image
-or-
1.Double-click the Part in the Selection-Window (after you click it one-time to put it there!!)
IMPORTANT: Occasionally, with some graphic-cards, to select a Part-Outline, you must hover above the arc at the start-Point to make a Part-Outline Red.
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-or-
1.Double-click the Part element in the Assembly-Tree |
METHOD 3: Use 'Edit menu > Edit Part in Part-Editor / Edit-Part in toolbar to left

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STEP 1: Click icon in the toolbar to the left of the graphic-area - see image
or
STEP 1: Click |
 Click the Part-Outline...
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Do this sequence:
1.Click (or the icon to the left of the graphic-area)
2.Click a
3.Click the graphic-area
or, do this sequence:
1. Click a Part-Outline in the graphic-area
2.Click (or the Part-Editor icon to the left of the graphic-area) |
METHOD 4: Right-Click in the Graphic-Area or Assembly-Tree

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STEP 1: Hover the Part-Outline
STEP 2: Right-Click the Part-Outline
STEP 3: Click Edit Part in Part-Editor from the contextual-sensitive menu.
Note:
Do not click the Part-Outline before you 'right-click' it. The instructions is:
Hover above so the element becomes RED, then Right-click.
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When the Part-Editor is active:
•You cannot see the
•The X–axis and Y–axis are larger than the axes in the Mechanism-Editor.
•You see the length of an .
•The is to the left of the graphic-area.
•The is to the right of the graphic-area. |

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Note: You cannot edit a Dimension when is active.
Before you do Methods 1 -3, make sure Add-Dimension is not active.
METHOD 1: Use the Selection-Window (recommended)
STEP 1: Click the arrowhead of the dimension
STEP 2: Right-click the dimension element in the Selection-Window
STEP 3: Click Edit Element in the contextual-menu
The Dimension dialog-box opens.
METHOD 2: Double-click the Dimension-Line
STEP 1: Double-click the Dimension Line, Arrowhead or Extension Line – not the dimension number.
The Dimension dialog-box opens.
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METHOD 3: Hover+Right-click the Dimension-Line
STEP 1: Hover + Right-click the Dimension Line or Extension Line
STEP 2: Click Edit Element in the contextual-menu
The Dimension dialog-box opens.
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There are three different methods/procedures you can use to edit a parameters value.
Method 1: Use your Keyboard

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Enter a data-value directly:
1.Enter the data-value with your keyboard
2.Press the Enter key on your keyboard to update to the new value
You must press the Enter key (also called the Return key) to update the value.
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Enter a symbolic equation:
1.Enter the data-value with your keyboard
2.Press the Enter key on your keyboard to update to the new value
You must press the Enter key (also called the Return key) to update the value.
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Symbolic parameters:
•Simple Arithmetic: +, –, *, /;
•Indices: ^, Sqrt();
•Trigonometric (Angles are Radians), pi, Sin(), Cos(), Tan(), Sinh, Cosh, Tansh, ArcSin(), ArcCos(), ArcTan2( ; ) |
Method 2: Use the 'Spin-Box' tool

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Spin-Box arrow buttons (in the blue-box)
Top : Left arrowhead to decrease the data-value by the Spin-Increment
Top : Right arrowhead to increase the data-value by the Spin-Increment
Bottom : Left arrowhead to divide the Spin-Increment by 10
Bottom : Left arrowhead to multiply the Spin-Increment by 10
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Edit the Data Value
•Click the Top : Left arrowhead to decrease the data-value . (Data-value after one click: 67.12345 – Spin-Increment(1) = 66.12345 )
•Click the Top : Right arrowhead to increase the data-value (Data-value after one click: 67.12345 + Spin-Increment(1) = 68.12345 )
Edit the Spin-Increment
•Click the Bottom : Left arrowhead to decrease the spin-increment (Data-value after one click: 1 ÷ 10 = 0.1 )
•Click the Bottom : Right arrowhead to increase the spin-increment (Data-value after one click: 1 × 10 = 10 )
WARNING: The model re-builds each time you click the top arrow-buttons of the Spin-Box tool
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< >
'Double-Click'
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Double-click inside the data-box to hide the Spin-Box.
Double-click the data-box again to show the Spin-Box.
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Method 3: Use the Zero/Round contextual-menu

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'Zero' or 'Round' data
1.Right-click inside the data box
The 'Zero / Round/Copy/Paste' contextual-menu shows.
•Zero: value becomes = 0.01 (generally do not use 'Zero' when the dimension is a 'Length' or 'Radius').
•Round: value becomes nearest value that is exactly divisible by the Spin-Increment. |
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To close the Part-Editor, use one of these methods:
•Double-click the Y-axis* or a - see image
- or -
•Cancel Edit Part , , in the contextual-menu to the left of the graphic-area
- or -
•Right-click in the graphic-area and cancel Edit Part icon in the contextual menu
* Why the Y-axis? Because, if you double-click the X-axis, you may actually double-click the CAD-Line and open the CAD-Line dialog-box. As you gain more experience, and can identify the X-axis, you can carefully the X-axis
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When you return to the Mechanism-Editor:
•the Part-Outline shows
•and the X and Y-axes axes are small
Note:
•The Part is 70mm long.
•Its Base-Angle is 75°. |