AutoCAD: Practice Exercises

Summary:  This will introduce the student to AutoCAD.

Objectives:  By the end of the lesson the student:

• will be able to draw lines of any length at any angle;
• erase one or more lines with one command sequence;
• draw arcs and circles;
• use the trim and extend commands.

Content:  

Getting Started

• The limits should be set to 29,27.
• Do not forget to 'zoom' 'all' before you start the line command.
• If you want to save all the drawings on your computer select the link here.

For the first exercise, begin by drawing from the bottom of the object (at the corner that says 162 deg.) and work your way around in the clockwise direction. When you get to the end make sure your OSNAP setting are selected and just have to click on the beginning of the first line to complete the drawing.

Exercise #2

Begin by drawing the object as though there were no arcs or circles on it; just draw straight lines across instead. See the drawing process here.

• Ensuring the 'midpoint' box is checked of in the osnap menu (right click 'osnap' at the bottom of your screen and go to 'settings') draw a circle by selecting the midpoint of one of the temporary straight lines. Then type in the radius of the circle which in this case is '0.3'.
• For the arcs, remember they are drawn in a counter-clockwise direction by AutoCAD. So after you select 'draw' 'arc' 'ser', be sure to choice the correct start point for you arc.

Start by drawing the perimeter of this object; ignore the arcs for now. Just like you did for the drawing above.

• Draw in the slot on the right half of the object.
• Add the arcs to the slot and to the notch on the left side.
• Now is the really challenging part... how do you figure out those curves on the four outside corners?
• If you can't figure it out check out the drawing process hints.

This can take over a day, or just a few minutes. To save yourself a lot of time, be sure to use the 'offset' 'extend' and 'trim' commands!

• Begin by drawing one vertical line 3.0 units tall.
• Using the offset command, add seven more lines spaced 0.25 units apart.
• Repeat this technique for the horizontal lines. You can draw just one horizontal line 1.0mm long and then add seven more with the offset command.
• Use trim and extend extensively to finish the main part of the drawing
• Put in your arcs once the main part is finished
• If you can't figure it out check out the drawing process hints

Actions:

Complete the four drawings on the front side of the exercise sheet.

Reference:  n/a