Application Settings dialog-box

Use the Application Settings dialog to edit the working environment, called a 'Style'. Style Settings include:

Any changes to your settings become the default settings when you exit MechDesigner. We call this its 'style'.

Different users on the same PC with different style preferences can save their own style with the Save button and load it later with the Load button.

See also: Themes and Styles

Open the Application Settings dialog-box:

Edit toolbar > Application Settings icon


                                                                         Application-Settings icon Edit Toolbar [ABOVE] graphic-area.

                                                                         Application-Settings icon
Edit Toolbar [ABOVE] graphic-area.



1.Click Edit menu > Application Settings

- or -

1.Click Edit toolbar > Application Settings
Application-Settings dialog-box

Application-Settings dialog-box

There are five tabs in the Application Settings dialog-box.

oNumber Format

Save and Load Buttons :

Save button : to save the active settings to a Style name
Load button : to load a previously saved Style or the Dark, or Light style

See also: Themes and Styles

Application Settings tabs



CAD Linear Unit

Make the units the same as the original drawing.

File Options

Extract Files in .ZXL to ...:

The ZXL file has all of the files that the model needs. There are two options:

Create a sub-directory automatically [with the same name as the ZXL file name]

I do not recommend this option. Why? Because when you open the ZXL file, you will create a new CXL and MTD in the sub-directory. If you open then edit and save CXL file then exit', you will also create a new ZXL This can create confusion as there will be files with the same name.

Specify ZXL output directory. I recommend this option. I specify the same directory as the ZXL file.

Enable Auto-save check-box [Default is checked]

Save the model before Auto-save begins.

Checked:   Recommended IF you prefer to continually save the model to the same file name. Do not use if you have a 'master file'.
Unchecked: Recommended IF you prefer to save when YOU want to save the model, or YOU want to create new file-names regularly.

At each Auto-save, MechDesigner:

1.Renames the CXL and MTD files to ~CXL and file-name ~MTD
2.Re-saves the open file as CXL and MTD

# Backup Files:

A backup file is made automatically when opening an existing file.

The backup files have the extension CXL.1, CXL.2, CXL.3...n and MTD.1, MTD.2, MTD.3...n.

Cam Options

Cam: Minimum Radius Warning Recommended: 100%

(Cam Radius-of-Curvature / Cam-Follower Radius ) × 100 %

The Cam becomes red if the Radius-of-Curvature of the Cam becomes less than the % × Radius of the Cam-Follower Roller:

Theme Options

There are three 'standard' styles you can select: Windows[not recommended], Windows10 and Charcoal Dark Slate.

Each style has a different 'border' colour scheme.

Each Style uses different colour icons to contrast with the border colours.

It is recommended you use the Load button to Load the

Dark.XML style with the Charcoal Dark Slate style option.
Light.XML style with the Windows10 style option.
We do not recommend the Windows style option.

Note: See 'Save' and 'Load' buttons, above.

Number Format


Data Output Format :

Used for displaying and exporting Graph data and Cam-Coordinates.

Float Number Format: See here (Internet Link) about number formats: General, Exponent, Fixed and Number.

Precision and Digits - see below

Dimension Format : Data format of dimensions in the graphic-area

Precision and Digits - see below

Dimension Font Size - Recommended : 13

Precision: The number-of-digits that are used before the number is 'rounded'.

Digits:  The number-of-digits after the decimal mark.





























Note: Make Precision>Digits to prevent 'rounding' to less than the number of decimal places.



Display Colours 

You can change the colour of many elements. Use each button to open the Windows® Colour 'picker'.

We continue to add to the list of elements whose color you can edit.

Note-Pencil-20 Arrow

The recommended colours for the dark style [R, G, B]

Background [128,128,128]

Selected Color [255, 0, 0]

Measurement Dimension


Part Unsolved [Free Part]

Part Solved [kinematically-defined Part] [0,128,0]

Geometry Under defined

Geometry Fully Defined

Display Options 

quality: Low < Quality > High

Use the 'Quality' slider to edit the drawing accuracy of various symbols and sketch-elements.

Show Function-Block Captions check-box.

Click the check-box to display element-name above each Function-Block in the graphic-area.

Show Function-Block names

Show Function-Block names

Hide Function-Block names

Hide Function-Block names

Show Function-Block Captions check-box.

Click the check-box to display the 'name' of the function-block as a caption above the icon in the graphic-area.

Only View Solids in active Mechanism check-box.

Click or Clear the check-box to show or hide the Solids that are in the active Mechanism

Note: To see the Solids, also use Visibility menu > 'Show Solids in Mechanism Editor'




Toolbar Icon Size

Click the size to suit your display and eye-sight.

Recommended : Medium

Text Size

Click the size to suit your display and eye-sight.

Recommended: Medium


See an English Joke! about sizes and language.

Language: English or Italian

Show Hints check box

If you do not need the hints, clear the Show Hints check box. We still show hints in the Feedback-Area.


Symbol Display Size [Pixels]: [5] The size of the 'symbols' of the elements in the graphic-area, such as arrow heads, Part-Outlines and axes.

Cursor Selection Size / Pointer Size [Pixels]: [6] The size of the pointer 'pin-head'. The larger this number the easier it is to select element, but you may select more than one element.


Enable Message Sounds: check box to let you listen to a sound each time MechDesigner sends a message to the Message Area in the Feedback-Area.

Click the buttons to hear the sound for each message.



Default Sizes 

Set these sizes in proportion to your models. Typical machine design and small medical devices will be set to different sizes,, of course.

Ball-Joint Symbolic Radius

This parameter gives the default radius of a Ball-Joint.

See also Ball-Joint dialog

Default Bearing Diameter / Default Grounded Bearing Diameter:

The dimensions used for the 'arcs' and circles for 'Auto-Solids.' Edit the Part later to to edit the dimension, if necessary.

See Add Auto-Profiles [Mechanism] command.

Default Extrusion Depth

The default dimension that applies to an extrusion when you use Add Profile or Add Auto-Profile.

See Also: Extrusion dialog-box


Tutorial and Reference Help Files for MechDesigner and MotionDesigner 13.2 + © Machine, Mechanism, Motion and Cam Design Software by PSMotion Ltd