Source: 爱上MAC | Software download link: CorelCAD 2020 for Mac
CorelCAD 2020 for Mac is a professional 2D drafting and 3D design computer-aided design (CAD) software. It is compatible with the DWG file format and offers an intuitive interface and powerful drawing tools, aiming to provide designers, engineers, and architecture professionals with an efficient and precise design experience. This article will take an in-depth look at its interface, workflow, and core techniques.
I. Detailed Overview of the Software’s Core Interface and Workspace
After launching CorelCAD 2020, users are presented with a highly customizable working environment, mainly divided into the following areas:
- Application Menu Bar and Quick Access Toolbar: Located at the top of the screen. The menu bar (File, Edit, View, etc.) contains all commands. The Quick Access Toolbar below it can be customized to add frequently used commands (such as New, Save, Print).
- Ribbon: Located below the Quick Access Toolbar. This is the core area for command organization, using a tabbed panel layout (such as “Home,” “Insert,” “Annotate,” “View,” etc.). Under each tab, related tool icons are arranged in groups; for example, the “Home” tab includes groups such as “Draw,” “Modify,” “Layers,” and “Blocks.”
- Drawing Area (Model Space): The blank area in the center of the interface is the main area where users create and edit geometric shapes. The background color and grid can be set according to preference.
- Command Line Window: Located below the drawing area. This is a distinctive interactive area of CorelCAD where users can directly enter full command names or shortcut keys and follow the prompts to perform operations. It also displays the operation history and options for the current command.
- Status Bar: Located at the very bottom of the window. It displays the cursor coordinates and contains a series of drawing aid toggles, such as “Snap,” “Grid,” “Ortho,” “Polar,” “Object Snap,” etc. Click the corresponding icon to quickly enable or disable them.
- Palettes: Usually docked on both sides of the interface, such as “Layer Properties Manager,” “Properties” palette, “DesignCenter,” etc. Their display and hiding can be controlled through the “Palettes” group under the “View” tab.
II. Complete Workflow from Creation to Export
The following uses drawing a simple mechanical part diagram as an example to describe the complete workflow.
1. Create/Open a Project
Operation Steps:
- Create a New File: Click the menu bar
File > New, or use the shortcutCommand + N. In the “Select Template” dialog box that pops up, usually selectacad.dwt(metric) oracadiso.dwt(imperial) as the blank template. - Open an existing file: Click
File > Openin the menu bar, or use the shortcutCommand + O, then browse and select the desired DWG or other supported file format.
2. Set Up the Drawing Environment
Steps:
- Layer management: In the “Layers” group of the “Home” tab, click the “Layer Properties” icon. In the panel that opens, click the “New Layer” button to create layers such as “Centerline,” “Construction Line,” “Dimension,” and “Section Line,” and set the color, linetype, and lineweight for each.
- Enable drawing aids: In the status bar, make sure “Object Snap” (ensure endpoints, midpoints, intersections, etc. are selected) and “Ortho” mode are enabled as needed for your drawing (a highlighted icon indicates it is enabled).
3. Draw the Geometry
Steps:
- Draw centerlines: Select the “Centerline” layer from the Layer drop-down list. In the “Draw” group of the “Home” tab, click the “Line” tool, or type
LINEin the command line (shortcutL+ Space/Enter), then specify the start and end points in the drawing area to draw horizontal and vertical centerlines. - Draw the wheel outline: Switch to the “Construction Line” layer. Use the “Circle” tool (type
CIRCLEorCin the command line) to draw circles centered on the centerline intersections. Use the “Offset” tool (typeOFFSETorOin the command line) to create concentric circles or parallel lines. - Modify Geometry: Use tools such as “Trim” (
TRIMorTR), “Extend” (EXTENDorEX), and “Fillet” (FILLETorF) in the “Modify” group to edit geometry.
4. Add Annotations and Dimensions
Steps:
- Dimensioning: Switch to the “Dimension Annotation” layer. In the “Annotation” group of the “Annotate” tab, select the appropriate dimension type, such as “Linear Dimension,” “Radius Dimension,” or “Diameter Dimension.” Specify the dimension points or select the object to be dimensioned one by one, and place the dimension line.
- Add Text: In the “Annotation” group, use the “Multiline Text” tool (command line input
MTEXTorT) to drag a box over the desired area and enter technical notes.
5. Layout and Plot Preparation
Steps:
- Enter Layout Space: Click the “Layout” tab (e.g., “Layout 1”) in the lower-left corner of the drawing area.
- Configure Viewports: The default layout already contains one viewport. Double-click inside the viewport to enter model space and adjust the display scale of the drawing; double-click outside the viewport to exit. You can also create new viewports via the “View” tab.
- Insert Title Block: Use the “Block” tool under the “Insert” tab to insert a prepared standard title block into the layout space.
6. Final Export and Printing
Steps:
- Print/Export to PDF: Click the menu bar
File > Print, or use the shortcutCommand + P. In the print dialog, select “Adobe PDF” or another PDF virtual printer as the printer. Set the print range, scale, and paper orientation. - Export to other formats: Click the menu bar
File > Export. In the dialog, you can choose to export the file as DXF, PDF, SVG, BMP, JPG, and many other formats. Select the save path and configure the relevant options. - Save the file: Throughout the process, you should frequently use
Command + Sto save your DWG working file.
III. Advanced Tips for Common Features
- Dynamic Input (DYN): After enabling “Dynamic Input” in the status bar, fields such as coordinates, length, and angle will appear next to the cursor. You can enter values directly without staring at the command line, greatly improving drawing efficiency.
- Grip Editing: After selecting an object, small blue squares (grips) will appear on the object. Click and drag the grips to quickly perform operations such as stretching, moving, rotating, and scaling without invoking specific commands.
- Quick Select (QSELECT): In the “Utilities” group of the “Home” tab, use the “Quick Select” tool to quickly filter by properties (such as layer, color, and linetype) and select all objects that meet the criteria, making batch modifications easier.
- Block Attributes and Data Extraction: Create graphics with attributes (such as title block information) as blocks. When inserting a block, you can enter different attribute values. Later, you can use the “Data Extraction” wizard to export block attributes to a table for generating a bill of materials (BOM).
- Parametric Drawing with Constraints: In the “Parametric” tab, use geometric constraints (parallel, perpendicular, concentric, etc.) and dimensional constraints (size-driven) to create intelligent graphics. When you change a constraint dimension, the related graphics update automatically, making it ideal for conceptual design and design revisions.
IV. Common Problems and Solutions
Problem 1: Graphics display is not smooth and appears jagged.
Solution: This is a display precision issue. Enter REGEN (regenerate) or RE + Enter in the command line. You can also do this from the menu bar via View > Regenerate. For a permanent improvement, increase the “Display precision” in Tools > Options > Display.
Problem 2: Unable to snap to the desired points (such as midpoints or intersections).
Solution: First, make sure “Object Snap” is enabled in the status bar (the icon is lit up). Right-click the icon, select “Settings,” and in the “Drafting Settings” dialog box that appears, ensure the required snap modes (such as endpoint, midpoint, center, intersection, etc.) are checked.
Issue 3: How can I quickly go back one or more steps after an accidental operation?
Solution: The fastest way is to use the shortcut Command + Z to undo. Press it multiple times to undo step by step. To redo, use Command + Y. You can also type UNDO in the command line and specify the number of steps.
Issue 4: DWG files opened from other CAD software have missing fonts or garbled text.
Solution: When prompted that SHX fonts are missing, you can choose to replace them with other fonts. A more fundamental solution is to copy the missing font files into the “Fonts” folder under the CorelCAD installation directory. For TrueType fonts, you can install them into the Mac system’s Font Book.
V. CorelCAD 2020 for Mac Shortcut Summary Table
| Function Category | Command | Shortcut (Mac) |
|---|---|---|
| File Operations | New | Command + N |
| Open | Command + O | |
| Save | Command + S | |
| Save As | Command + Shift + S | |
| Command + P | ||
| Quit | Command + Q | |
| Drawing Commands | Line | L |
| Circle | C | |
| Arc | A | |
| Rectangle | REC | |
| Polyline | PL | |
| Multiline Text | T | |
| Hatch | H | |
| Block Creation | B | |
| Modify Commands | Move | M |
| Copy | CO / CP | |
| Rotate | RO | |
| Scale | SC | |
| Trim | TR | |
| Extend | EX | |
| Offset | O | |
| Fillet | F | |
| View Control | Real-time Pan | Middle mouse button drag / P |
| Real-time Zoom | Mouse scroll wheel / Z | |
| Zoom Previous | Z + Space, P + Space | |
| Regen | RE | |
| Zoom Extents | Z + Space, E + Space | |
| Object Snap Toggle | F3 | |
| General Operations | Undo | Command + Z |
| Redo | Command + Y | |
| Select All | Command + A | |
| Clear (Delete) | Delete | |
| Properties | Properties Panel | Command + 1 |
Note: In CorelCAD, many command shortcuts need to be typed while the command line is active, then press the spacebar or Enter to execute. Most of the entries listed in the table are command aliases.







