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Drafting Design

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Jake Vallier

on 19 November 2013

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Transcript of Drafting Design

Digital Portfolio
Drafting Design
Jake Vallier

2013-2014 School year

1st Trimester

1st hour

AutoCAD has many varying features in it. AutoCAD in a way resembles Microsoft WORD. It has a toolbar located at the top of the screen with various tabs to help users access different tools easily. In regards to those tabs, it features the home tab and insert tab like WORD. This is generally where most tools are used. AutoCAD offers many applications allowing for an easy to understand interface. Such tools include line, circle and arc. It also has a MODIFY tab which allows commands such as MIRROR, TRIM, and FILLET. The line and circle tools make it easy for users to apply the correct dimensions with its setting options for radius, diameter, and center start end commands. It gives many layers to work in and to manipulate. In drafting class the primary layer was the object layer. Starting a list all the advantages of AutoCAD is a hard list to start due to the many helping purposes it can serve. One of the most significant advantages to AutoCAD is its accuracy and efficiency. For one to draw an image traditionally by hand has the potential to take a longer time and possibly won’t be very precise. For the best way to make lines that are straight and correct in correspondence to the drawing, AutoCAD features an X and Y axis and offers the GRID command to allow the user to view straight lines. SNAP, also is a command in which allows the cursor to automatically stop on an intersection of two GRID lines. During the class, making tangent lines to circles and arcs at first proved a challenge. However after two times working with the CONSRUCTION LINES it became very simple. GRID and SNAP are two tools that allow easier use of AutoCAD and are very simple to implement. Looking at what is needed to be drawn, one is able to see how small or large to crate spacing between GRID lines. FILLET is also a very easy to use COMMAND. All that needs to be done is to specify a radius, click to adjacent lines, and you have your FILLET ARC.
Autodesk Inventor Digital Fabrication
Digital fabrication is a way to combine construction/production using Autodesk Inventor with 3 dimensional modeling. Students expierenced digital fabrication when they had the ability to create an iphone kickstand. Through interpreting pictures and sketches, they were able to develop their kickstands to realize it's working potential.
On initial use of AutoDesk Inventor, the user interface was difficult to grasp. Chapter one led objectively to teach how to start a new project.
Parametric Modeling Fundamentals
Recently emersed in an unknown world of drafting technology, the student finds difficulty creating initial base 2-d sketches that are later extruded to make parts. Step-by-step guidance was given to complete the adjuster arm tutorial that coincidentally taught the basics of 3-d modeling, including extrusions, creating contrained sketches, altering profiles, chosing the right plane to sketch, and sketching tools.
Getting Started
By the end of the chapter the reader has been taught how to begin a new project file . In Drafting and Design the main project file used was Parametric Modeling.
The Model History Tree
As user's skills continue to progress from the course and text book, they realize mistakes occur in their models. Through in class exercises, the student learns techniques to adapt their projects without ultimately starting over. This process involves the Model's history tree. This "tree" is a window that displays a feature once it is created. If another feature is created within the original, it is dependent on that feature and is located beneath it's parent in the tree.
Parametric Constraints Fundamentals
The apprentice by this point in their learning, has acquired many essential skills, but yet, lacks the means to draw fully constrained sketches.
In chapter 5 of the book, students are introduced to constraints and are taught how to use them. taught how to add dimensional constraints to sketches. Some of the more common constraints are dimensional, co-linear and co-incident. By clicking on icons in the tool bar, the student is able to apply them. For example, if a student wants to create a tangent line to an arc or circle, they simply click on the "Tangent" icon and then select an adjacent line to the arc or circle.
Geometric Construction Tools
As students progress through the course, their competence in the interface begins to build. Inventor starts to introduce the student to more useful tools that are needed to quickly solve unwanted drawing problems. The system incorporates a trim tool, offset tool and an extend command. As the post-chapter exercises gain difficulty, 2-d designs often end up with unwanted or extra lines. For example, if an extra line is not needed, simply selecting the "Trim" tool icon and then the line will quicly remove it without erasing the entire feature.

The offset command is another unique tool that Inventor utilizes. It allows in either sketch or 3-d model mode to replicate the outline of a feature. Once a feature is replicated through the offset tool, extrusion of the feature is easily accomplished.
What Is Gained
Drafting and Design is a class that anyone who has an interest in designing parts should take. It expands the learning beyond the classroom by introducing the student to how things are designed and the world of drafting/design as a career. This class is different from most classes taken at the high school level, because the student gets to directly apply what is learned and can get a more immediate understanding of the subject matter. Entering the class many students do not have any prior knowledge of the software. Upon completion the student can take rough sketches extrude them and make an accurate model. Through exposure to this introductory class many students will decide to pursue some form of drafting/design as a career. With all the gains in the course, why wouldn't somebody like to take this class?
AutoDesk Inventor
Freehand Sketching
Freehand sketching allows people to draw rough interpretations that are proportionate to a model. All of these interpretations are done by hand on graphing paper to eliminate error. Such a freehand sketch that was demonstrated how to do was the Buick Transmission Gasket(featured below). No tools including compasses, rulers, or protractors were used in its creation.

The AutoDesk Inventor software allows for users to draw and create 3 dimensional objects. A person can design parts that later can be 3-d printed to scale. In many ways Inventor resembles AutoCAD or Microsoft Word. Like both it features a tool bar for easy to locate commands such as FILLET, HOLE, EXTRUDE, and many more. It also contains a file tab that is understandable to new users. In the tab a window pops up like in Word asking if you wish to save or to start a new project. However, pertaining to the new project, it asks what type of project is to be made. Then it suggests English standard or Metric . Once selected, the designer has free hands on the reigns of an infinite world of creativity.
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