Drafting & CAD Technology - Introduction to AutoCAD - PDF
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National University
Ar. Z Miranda
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This document is an introductory guide to AutoCAD and CAD technology, covering fundamental and advanced concepts. It includes information on the AutoCAD interface, commands, user interface elements, and various drafting techniques, suitable for users looking to improve their design skills.
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Here's the content of the image converted into a structured markdown format. # Drafting & CAD Technology ## DRAFTING & CAD TECHNOLOGY * Introduction to the AutoCADD * A structured guide to fundamental and advanced AutoCAD/ACA concepts * Created by Ar. Z Miranda ## Introduction ### AutoCAD...
Here's the content of the image converted into a structured markdown format. # Drafting & CAD Technology ## DRAFTING & CAD TECHNOLOGY * Introduction to the AutoCADD * A structured guide to fundamental and advanced AutoCAD/ACA concepts * Created by Ar. Z Miranda ## Introduction ### AutoCAD Architecture * Initial release February 1997 * With tools and functions specially suited to architectural work * Architectural objects have a relationship to one another and interact with each other intelligently * Supports .dwg, .dxf, .dwt, .dws * Abbreviated as ACA ## Introduction ### AutoCAD * Initial release: December 1982 * General drafting and design application used in industry * Supports .dwg, .dxf, .dwt, .dws * Abbreviated as CAD ## INTRODUCTION | | ACA | CAD | | :-------- | :----------------------- | :------------------------ | | **Years** | 27 years old | 41 years old | | **Tools** | Specialized architectural tools | General Set of Tools | | **Library** | Bigger Dynamic Block Library | Limited Dynamic Block Library | | **Output** | Automatic Elevations, Section, Schedules | Basic Drawing output | | **Commands** | Specialized Autocadd Commands | Standard Autocadd Commands | | **Pricing** | AutoCAD 2025 + extension/Add on Price | 3 years / 1 year / 1 month \| $4,185 / $1,395 / $175 | ## THE APPLICATION MENU (Big Red "A") **Location** * Top-left corner of the AutoCAD window **Purpose** * Central hub for file operations and AutoCAD settings * Recent Documents (pin frequently used files) * Search Bar (file names/commands) * Common Commands * New / Open * Save / Save As (DWG, DWT for templates) * Import / Export (PDF, DGN) * Publish / Print (plot settings, 3D prints) * Drawing Utilities (compare, purge, recover, units) * Options (bottom of menu) → configure everything from save formats to user preferences **Expert Tip ()** * Save As → Convert to downgrade a file format for older versions * Etransmit or Archive to package drawings for sharing ## THE INFO BAR (TOP-RIGHT) * **Global Search:** "Type a keyword or phrase" Searches help docs, Autodesk resources, local references * **User Sign-In:** Sign into Autodesk Account * **App Store:** Access third-party tools/plugins * **Connect with Autodesk:** Links to blogs, hardware certifications, social platforms * **Help & Support (? icon):** Quick access to online/offline Help, feedback, performance analyzer, privacy settings ## QUICK ACCESS TOOLBAR (TOP-LEFT) * **Default Tools:** New, Open, Save, Plot, Undo/Redo * **Share:** Quickly share your drawing to AutoCAD Web * **Customization** (small eject icon) \- Add frequently used commands (e.g., Layer dropdown) \- Check/uncheck items to remove or add **Pro Workflows()** * Layer dropdown on Quick Access is invaluable if you switch Ribbon tabs often and still need layer control. ## THE RIBBON AND RIBBON PANELS * **Ribbon Layout** \- Primary method for accessing most commands (Draw, Modify, Annotate) \- Organized into Tabs (Home, Insert, Annotate, View) \- Each Tab has Panels (Draw, Modify, Layers) **Customization** \- Flyouts (downward arrows) \- Expand additional commands; pin to remain open \- **Sticky Panels:** Drag a panel into the drawing area (for multi-tab workflows) - **Ribbon Appearance:** small white arrow on the Ribbon's right-side that toggles display states - **Docking & Layout** - Keep the Ribbon at the top for standard workflows ## WORKSPACES * **Concept** - A workspace saves an arrangement of interface elements (Ribbon panels, palettes, toolbars, etc.) - **Default Workspaces** - Drafting & Annotation (2D) - 3D Basics - 3D Modeling - **Creating/Modifying a Workspace** 1. Arrange Ribbon panels, palettes, Quick Access Toolbar 2. Gear Icon on status bar → Save Current As 3. Name and overwrite or create a new workspace (e.g., "My\_2D\_Workspace") **Expert Tip ()** \- Always re-save your custom workspace if you make changes ## PALETTES VS. DIALOG BOXES 1. **Palettes** \- Examples: Layer Properties Manager, Tool Palettes, Properties, Sheet Set Manager \- *Flexible:* Dockable, auto-hide, resizable \- *Settings & Info:* Remains open while you work - **Dialog Boxes** - Examples: Block Definition, Page Setup, Plot, Insert - *Transient:* Appear for immediate input, then close - Usually, cannot be shrunk beyond a certain size 2. **Practical Usage ()** \- Layer Properties (a palette) is essential for daily drafting—pin it! \- Block Definition (a dialog) is a onetime definition window ## THE COMMAND LINE * **Legacy interface:** typed commands * **Location:** bottom of the screen * **Key Features** Dock/undock Expand/collapse arrow on the right AutoComplete suggestions * **Best Practice ()** \- Keep it visible, even if using Dynamic Input, for systemmessages/error feedback ## DYNAMIC INPUT & THE STATUS BAR * **Dynamic Input (DYN)** Displays command prompts, angles, lengths near your cursor Toggle on/off (F12) from the status bar or right-click → * **Dynamic Input Settings** Reduces eye travel from the drawing area * **Status Bar** Bottom-right of AutoCAD Drafting Settings (Snap, Grid, Ortho, Polar, Osnap) Customization (the "three lines" icon): add Coordinates, lineweight, etc. * **Expert Tip ():** its your "action hub" for drafting aids; keep your most-used toggles on ## NEW TAB TOOLS IN AUTOCAD 2024 * **File Tab Menu (Top Bar)** \- 3-line icon near open drawing tabs \- Options: New, Open, Save All, Close All, switch drawings * **Layout Tab Menu (Bottom-Left)** \- 3-line icon near Model/Layout tabs \- Quickly create New Layout, New Layout from Template, manage setups * **Note()** \- These new Tab Tools are exclusive to AutoCAD 2024 ## MOUSE CONTROLS & COMMAND EXECUTION Mouse Controls * **Left Click:** Select objects, confirm points or commands * **Right Click:** Shortcut menus; can be set to Repeat Last Command or other context options * **Middle Mouse (Wheel):** \- Scroll to Zoom in/out \- Click+Drag to Pan around the drawing \- Double-click wheel to Zoom Extents Command Execution Techniques * Typed Commands: Enter aliases (e.g., L, C, PL) on the Command Line * Ribbon & Toolbars: Click icons for direct commands * Context Menus: Right-click in drawing area (with or without objects selected) for context-based commands * Palettes: Insert blocks or styles via drag/drop * Shortcuts: SHIFT, CTRL, ALT combos (Snap Overrides, multiple selections, etc.) ## Basic Navigation Scroll = Zoom in/out Click Drag = Pan/Hand ## FUNCTION KEYS OVERVIEW * F1: Help * F2: Toggles expanded command line window * F3: Object Snap ON/OFF * F4: 3D Object Snap ON/OFF (in 3D) * F5: Cycle isometric planes (IsoPlane) * F6: Dynamic UCS or coordinate display * F7: Grid ON/OFF * F8: Ortho ON/OFF (horizontal/vertical only) * F9: Snap ON/OFF (snap to grid) * F10: Polar Tracking ON/OFF * F11: Object Snap Tracking ON/OFF * F12: Dynamic Input ON/OFF **Modifier Keys** * SHIFT + Right-click: Snap overrides * CTRL, ALT: Additional shortcuts in certain workflows ## BASIC DRAWING & EDITING COMMANDS * **LINE (L)** \- Creates straight line segments between two points \- Tip: Ortho (F8) or Polar for exact horizontal/vertical lines * **CIRCLE (C)** \- Draw with center & radius, or other methods (2-point, 3-point) * **ARC (A)** Create arcs via three points or start-end-radius * **RECTANGLE (REC)** Rectangular polylines, specify length/width or use dynamic input * **POLYLINE (PL)** Connected sequence of lines/arcs in one object * **POLYGON (POL)** Regular polygons (e.g., hexagon); choose inscribed or circumscribed ## BASIC DRAWING & EDITING COMMANDS * **MOVE (M)** → Repositions selected objects to a new location. *Subcommands/Options:* *Base Point*: Specify the reference point. *Displacement*: Enter X, Y (and Z) offsets to move objects precisely. * **COPY (CO)** → Duplicates selected objects. *Subcommands/Options:* *Base Point:* Specify the reference point. *Multiple:* Repeat the copying process without reissuing the command. * **ROTATE (RO)** → Revolves objects around a base point by a specified angle. *Subcommands/Options:* *Base Point:* Set pivot location. *Reference:* Align the rotation angle with an existing line or distance. * **SCALE (SC)** → Enlarges or reduces objects relative to a base point. *Subcommands/Options:* *Base Point:* Pivot or anchor for scaling. *Reference:* Match a known length in the drawing for more precise scaling. * **MIRROR (MI)** → Reflects objects across a specified axis line. *Subcommands/Options:* *Erase Source:* Delete or keep the original objects. *Base Point:* Define the start of the mirror axis. * **OFFSET (0)** → Creates parallel or concentric copies of selected objects at a specified distance. *Subcommands/Options:* *Distance:* Numeric offset value. *Through:* Click a reference point for offset spacing. * **TRIM (TR)** → Cuts objects to meet or intersect with boundary edges. *Subcommands/Options:* *Cutting Edges*: Select boundary objects. *Fence*: Trim multiple objects using a drawn fence line. *Mode*: Switch between Standard and Shift-Select modes. * **EXTEND (EX)** → Lengthens objects until they intersect boundary edges. *Subcommands/Options:* *Boundary Edges*: Select the edges you want to extend to. *Fence*: Extend multiple objects with a fence line. * **FILLET (F)** → Rounds the corner where two objects meet using a specified radius. *Subcommands/Options:* *Radius*: Set the fillet arc radius. *Trim*: Choose whether to trim intersecting lines. *Polyline*: Apply fillet to all corners of a polyline. * **CHAMFER (CHA)** → Bevels or cuts the corner where two objects meet, using distance or angle. ## BASIC DRAWING & EDITING COMMANDS * **ARRAY (AR)** → Creates multiple copies of objects in a rectangular, polar, or path pattern. * **Rectangular Array** *Subcommands/Options:* *Rectangular:* Rows, columns, spacing. *Polar:* Center, number of items, angle between. *Path:* Distribute copies along a selected path (line, arc, spline). *Replace Item:* Swap one array element with another object. * **EXPLODE (X)** → Breaks a compound object (e.g., block, polyline) into individual elements. *Subcommands/Options:* Typically, Base or multiple selections; no specialized subcommand. Use sparingly to maintain the benefits of grouped objects. *Layers & Properties* *LAYER (LA):* Manage color/linetype, layer states *PROPERTIES (PR):* Edit color, layer, lineweight *MATCHPROP (MA):* Copy properties from source to dest * **PURGE (PU):** Remove unused layers, blocks ## BASIC DRAWING & EDITING COMMANDS Layers & Properties * *LAYER (LA):* Manage color/linetype, layer states *- PROPERTIES (PR):* Edit color, layer, lineweight * *MATCHPROP (MA):* Matches the properties (color, layer, linetype) of a source object to a destination. * *Tip:* Saves time when ensuring consistent formatting across similar objects. * *PURGE (PU):* Remove unused layers, blocks. Make drawing file size smaller * Tips for Beginners & Intermediate Use Aliases (L = LINE, C = CIRCLE) Practice with real drawings * Keep layers organized, use a template (.DWT) with standard settings ## ADDITIONAL 2D DRAFTING TOOLS & TECHNIQUES * **Hatch Command & Patterns (H)** \_ Fill closed boundaries with patterns, solids, gradients Common for sections (walls, floors) Scale, angle, associative toggles Tip: ctrl+s before executing Hatch command * **Splines (SPLINE)** Spline Fit or Control Vertices (CV) Smooth, organic curves Hover over grips to add/remove fit points * **Construction Line (XL) & Ray (RAY)** Infinite geometry for projections or angles Ray extends infinitely in one direction only ## ADDITIONAL 2D DRAFTING TOOLS & TECHNIQUES * **Points & Multiple Points (PO)** Place single or multiple points; set style with PTYPE * **Divide (DIV) & Measure (ΜΕ)** Divide or measure objects at equal segments or intervals * **Region (REG) vs Join (J)** Region: Converts closed 2D shapes into surfaces Join: Merges line/arc segments into one polyline * **Wipeout (WI)** Masks underlying geometry with a polygon shape * **Donut (DO)** Filled ring; set inner/outer diameter * **Revision Cloud (REVCLOUD)** Highlight changes (Rectangular, Polygonal, Freehand) ## DRAW ORDER & TEXT HANDLING **Draw Order** * Bring to Front, Send to Back, Above Object, Under Object **Text to Front / Send Hatches to Back** * Reorder geometry visually and in plots **Basic Dimensions** * Linear (DLI) * Aligned (DAL) * Angular (DAN) * Arc Length (DAR) * Radius (DRA) * Diameter (DDI) * Ordinate (DOR) * Jogged (DIMJOGGED) * Smart Dimension (DIM) ## ADVANCED DIMENSION TOOLS - Quick Dimension (QDIM) - Dimension Continue (DCO) - Dimension Break (DIMBREAK) - Adjust Space (DIMSPACE) - Jog Line (DIMJOGLINE) - Reassociate (DIMREASSOCIATE) - Tolerances (TOL) - Dimension Style Manager (D): Lines, Arrows, Text, Fit, Units **Expert Tip ()** - Use a custom Dimension Style template for consistent formatting ## DIRECT DISTANCE, COORDINATES, DYNAMIC INPUT * **Direct Distance Entry (DDE)** - Move cursor in direction, type distance, press Enter - Ideal for orthogonal shapes w/ Polar Tracking. * **Coordinate-Based Drawing** - Absolute (X,Y from origin) or Relative (@X,Y from last point) - Turn off Snap/Polar/Osnaps if purely coordinate-driven. - For polar coordinates, angles can understand Lot bearings (e.g. N45d10”1’E) * **Dynamic Input** - Prompts near cursor for dimension/angle - Tab to switch between distance & angle - Mix these three methods for maximum flexibility ## DIRECT DISTANCE, COORDINATES, DYNAMIC INPUT | Method | Key Advantage | Use Case | | :------------- | :---------------------- | :------------------------------------------------------------ | | Direct Distance | Fast orthogonal lines w/ Polar | Building simple, rectangular shapes quickly. | | Coordinate Entry | Ultra-precise XY specification | Large or origin-based designs; requires exact refs. | | Dynamic Input | Real-time visual feedback | Mixed angles/distances; easier for smaller details. | **Expert Tip ()** You can mix these methods! For instance, you can start with Direct Distance Entry for rectangular edges, then switch to Coordinate Entry for a precise offset from a known origin, and finally rely on Dynamic Input for any angled lines. ## CREATING & MANAGING LAYOUTS * **Context** Prepare multiple Layout tabs, each with custom viewports, scales, title blocks * **Deleting Layout Tabs** Right-click (e.g., Layout2) → Delete * **Duplicating Layouts** Right-click (ISO A1 Landscape) → Move or Copy → Create a Copy Rename (e.g., "Ground Floor") *Why Duplicate?* Quickly generate multi-sheet sets with the same page setup and title block ## PLOTTING FROM THE MODEL TAB ### Use Case Quick, informal print of a specific area (like a conference room) without formal layouts ### Method * Right-click Model tab → Plot * Choose printer/plotter (AutoCAD PDF) * Specify sheet size, plot area, scale * Preview → OK #### Note on Modern Alternatives AutoCAD Web & Mobile exist, but a paper print can be fastest for site notes ## BATCH PLOTTING (PUBLISH) **Definition** Print or publish multiple layouts at once **Access** Output tab on Ribbon → Batch Plot / Publish **Dialog Overview** Sheet List (all layouts) Plotter/Output (use page setup or override w/ PDF) Rename sheets, add Plot Stamp, Publish in Background **DSD Files** Store all batch plot configs (sheet order, naming, etc.) Save & reuse weekly **Workflow Example** 1. Save drawing, open Batch Plot 2. Show Details, pick device, rename sheets 3. Optional plot stamp 4. Save to DSD → Publish *Benefits*: Time-saving for large sets, consistent outputs ## MORE ADVANCED COMMANDS * **Blocks and Dynamic Blocks** → Blocks are reusable groups of geometry; Dynamic Blocks include parameters/actions for flexibility (e.g., stretch, flip). Usage:\* Insert standardized symbols (furniture, doors) to ensure consistency. Dynamic Blocks let you resize or toggle elements without multiple block definitions. * **DesignCenter** (ADCENTER) → A tool for browsing and importing drawing content (blocks, layers, styles) from open or external DWGs. Usage:\* Quickly drag-and-drop blocks, dimension styles, or layers into the current drawing; also serves as an easy way to reuse content from a "library" file without manually opening it. * **External Reference** (XREF) → Attaches external DWG or other file formats to the current drawing. Usage:\* Keep large projects modular (e.g., floor plans, consultant files) and update references automatically rather than copy/paste geometry. * **Purge** → Cleans unused layers, blocks, linetypes, and styles from a drawing. Usage:\* Run regularly to reduce file size, remove clutter, and maintain performance. * **OVERKILL** → Removes overlapping or duplicate objects (lines, arcs). Usage:\* Clean up messy or imported geometry; merges coincident lines or arcs to keep files precise. * **Quick Select** (QSE) → Filters and selects objects based on properties (layer, color, object type, etc.). Usage:\* Bulk-edit or verify drawing consistency (e.g., select all lines on a certain layer). * **Select Similar** → Selects all objects with matching properties (layer, color, linetype) to the chosen one. Usage:\* Perform edits, layer changes, or property updates on multiple objects quickly. * **LAYWALK** → Lets you view and isolate each layer's contents. Usage:\* Inspect or troubleshoot layers, see which objects belong to which layer quickly. * **Ctrl + R (Viewport Cycling)** → Cycles through multiple viewports in a layout. Usage:\* Quickly activate different viewports without clicking inside each one. ## MORE ADVANCED COMMANDS * **VPORTS →** Manages multiple viewports in a layout, each with different scales/views. * Usage: Split a layout into multiple windows, showing various areas or angles of a model. * **CHSPACE (Change Space) →** Moves objects between Model space and Paper space, automatically adjusting their scale. * Usage: If you inadvertently drew notes/dimensions in Model space (or vice versa), you can transfer them to the correct environment. * **Tool Palettes - Design (TP) →** Palettes containing commonly used blocks, hatches, commands. * Usage: Drag-and-drop insertion of standard items (doors, windows, detail symbols) or quick command launching. * **BATTMAN →** Manages attribute definitions in blocks. * Usage: Quickly reorder, rename, or synchronize block attributes without re-creating the block. * **NCOPY →** Copies nested objects (in Xrefs or blocks) into the current drawing. * Usage: Extract geometry from within references/blocks for direct editing in the active DWG. * **Burst →** Explodes a block or object but retains any attribute values as text (unlike EXPLODE, which reverts them to attribute definitions). * Usage: Preserve displayed attribute info when splitting a block into separate entities. * **Startup →** Controls whether the New Drawing dialog or command-line version appears on starting AutoCAD. * Usage: Adjust user preference for how new files or opening screens behave. * **Tx2Mtxt →** Converts multiple single-line TEXT objects into a single MTEXT object. * Usage: Clean up multiple text lines so you can format them collectively as one multiline text block. * **-From →** A command-line coordinate option that specifies a base point offset for a next point. * Usage: Useful in relative coordinate input (e.g., "base point + offset" during commands like Move or Copy). * **m2P →** Short for "Midpoint of Two Points," used in coordinate entry. * Usage: Quickly snap to the midpoint between any two reference points without drawing extra lines. ## MORE ADVANCED COMMANDS * **XCLIP** → Trims or "clips" the visible portion of an external reference or block to a defined boundary. * Usage: Show only relevant parts of an attached plan without editing the source file. * **OOPS** → Restores objects erased by the most recent block or wblock command. * Usage: If you accidentally block/wblock geometry and it disappears, OOPS recovers it. * **EATTEXT** → Extracts data (like block attribute info) into Excel or a table. * Usage: List coordinates (trees, lights), create schedules (doors, windows), or BOMs directly from your DWG data. * **SAVEALL** → Saves all open drawings at once. * Usage: Quickly safeguard all changes across multiple files during the session. * **CloseALL** → Closes all open drawings in one step. * Usage: End your drafting session quickly, optionally saving if prompted. * **List** → Displays properties (length, layer, color) of a selected object in the command line. * **Usage:** Check an object's details (arc length, line length, etc.) without opening the Properties palette. * **PRE (Preview)** → Typically triggers a Plot Preview (or a short alias for commands that show a preview). * Usage: Quick look at what's about to be plotted or changes about to be applied. * **SPELL** → Spell-check text objects in the drawing. * Usage: Ensures no typos in annotations or notes. * **VPSYNC** → Synchronizes one viewport's layer visibility settings with another. * Usage: Copy the same viewport freeze/thaw settings so multiple viewports are consistent. * **BREAK (BR) & Break at Point** → Splits a line/arc/polyline either between two chosen points or at a single point. * Usage: Separate geometry (e.g., doors in wall lines) without altering the rest of the object. * **Set to ByLayer (SETBY)** → Converts objects that have custom color/linetype overrides back to ByLayer settings. * Usage: Standardize appearances and enforce consistent layering conventions. ## FINAL TIPS & BEST PRACTICES * **Centralize Layouts** \- Consistent title block, page setup, scale * **Model vs Layout Plot** \- Model Tab: Quick, informal prints \- Layout Tab: Formal, scaled drawings with title blocks * **DSD File Management** \- Save .dsd for repeated batch plotting * **Regular Maintenance** PURGE, AUDIT, RECOVER to keep files clean * **Keep consistent dimension styles and layer systems** * **USE EXTENSIONS** Use APPLOAD to use .lsp file for extended functionality (e.g. PLDiet, BFixAll, MakeExplodeB, StyleMerge) * **Happy CADD drafting!**