20 Days of 2D AutoCAD exercises #19

We are almost at the end of this series of AutoCAD learning exercises. Today, we have a tricky one, and I hope it is really tricky for you. The drawing below is to be replicated using AutoCAD or any other CAD software you may have at hand.

 

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Complementary information.

The head on the far right side is constructed like this.

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You might want to consider the image B, to apprehend how you should start drawing image A which is of course part of the exercise.

There is an Array to construct around the center of the circle R7.5. You will figure the element out looking at the exercise.

Hint for the whole exercise.

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The distance between these two points is 40

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This bring us to the end of today’s session.

See you on Day #20

 

100-cad-exercises

The whole series
AutoCAD Exercises #1Drawing your first piece of 2D using AutoCAD. Using LINE command and fixing your settings for a better user experience. Learning how to use coordinates and Using exclusively the command window to draw.
AutoCAD Exercises #2Learning how to draw straight lines with definite dimensions. Basic concept for daily use while working with AutoCAD
AutoCAD Exercises #3Learning the use of OSNAP and using skills you gained to design a more complex 2D.
AutoCAD Exercises #4Using some math and drawing lines with specific angles and dimensions. Learning the basic concept of angles in AutoCAD, and actually using the trick main while.
AutoCAD Exercises #5FILLET command and the use of OSNAP. Learning how to place object. Learning how to use center points.
AutoCAD Exercises #6CHAMFER command. Using the CHAMFER command and leaning more about the command window.
AutoCAD Exercises #7how to use HATCH in AutoCAD. You will need skills from Day #4 to have the exercise done, and you will learn how to actually use the HATCH command.
AutoCAD Exercises #8Playing with the TANGENT feature of the OSNAP. You will have a complex figure to replicate, and you will have to learn how the TANGENT feature of the OSNAP works. You will also have to learn a new trick on how to draw a circle using this very technique.
AutoCAD Exercises #9Clear description on how the ARC command works and a complex exercise to try the technique out. All instructions are given for you to easily assimilate the tutorial.
AutoCAD Exercises #10Tricky exercise. You will have to use all technique you have learned in previous exercises to accomplish this one. Hints are given. And an opportunity to ask questions is as well given
AutoCAD Exercises #11Concrete exercise where you will have to see advantages of learning the ARRAY command. A Polar Array is designed and some old techniques you must have learned from the beginning will be helpful.
AutoCAD Exercises #12We have more than an exercise, The aim is to force you to use the ARRAY command. A rectangular Array is to be created.
AutoCAD Exercises #13MIRROR command. The mirror command has not been used since the beginning. This exercise makes it impossible for you if you don't use the MIRROR command. Learning the concept of symmetry in AutoCAD
AutoCAD Exercises #14Create a layers and changing line type. Using the ROTATE command and the OFFSET command. Learning how to combine a set of techniques toward something definite.
AutoCAD Exercises #15Using the combination of all techniques learned so far to come to achieve a complex 2D AutoCAD exercise. Previous learned techniques will be needed in this session and a little bit of math too.
AutoCAD Exercises #16This is a nice AutoCAD exercise that will make you test what you have learned so far. It is testing you ability to combine all you know to get a quite tough exercise done. Of course, hints have been provided to help you get it done.
AutoCAD Exercises #17Revision exercise. Be ready to use your calculator. You will need a bit more of precision in this session. An emphasis has been made on the ROTATE command, OFFSET command and FILLET command in this exercise.
AutoCAD Exercises #18Learning how to draw a polygon in AutoCAD. Here is shown how you can easily construct perfect star in AutoCAD, you may want to convert it into a block for future use. A complex figure is provided as well to help you practice.
AutoCAD Exercises #19Learning how to construct a complex drawing using technique provided to you in previous sessions. This serves as a test, to see how far you have gone since the beginning of this series of exercises.
AutoCAD Exercises #20Exam Day. Grab your Exam eBook for free and come back to me with questions and suggestions on how to make this course easier to understand if possible.
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  • Lee

    Re 20 days of 2d autoCAD exercises #19.
    Do I have all the information to do the drawing ?
    I don’t know where the R42 and R50 are measured from.
    Thanks for any help.

    • Antone

      R50 is tangential to 2 objects, you dont need to know its center. Just use the feature of the circle to draw a circle from 2 tangent points and Radius.
      R42 has to be drawn using the same technique. But for R42 you need to draw the R10 to the right and use it to specify your tangent point.
      The Center of R10 can be found using the angle shown on the figure between R10 and R7.5 (135 degrees)
      All information are given.

  • Raul

    Hi I’m having difficulties drawing the leftmost figure wich I only know its 55 units from the rightmost circle, could you help me know what I’m missing here?

    • Antone

      you first have to draw two circles of R4 with their center placed vertically from each other (12.5). Draw lines on the most right and left tangent point of the 2 circles and use the TRIM command to remove unwanted segment. You can either do the same to obtain the outer figure or simply use the OFFSET command to get its outer equivalent.

  • Raul

    Thanks, I should´ve been more specific, what I meant was on how do I know where to place this figure, since the only point of reference I see is the x axis that marks 55 units away from the circle.

    • Antone

      You are right. I just uploaded the corrected image. That value was missing though
      Thanks

  • martins

    hi, there are dimensions missing, to draw immage A. I can’t find anywhere diameter, how far from center are the small circles with d 0.5

    • Antone

      The Radius of the polar array is 2.5. (means the center of those circles are 2.5 away from the center of the array)
      My bad.. .another Value I’ve forgotten to put.
      thanks

  • rayahji

    hi can i ask where do we get the distance 40 in exercise no.19 thanks in advance

  • rayahji

    can you indicate how to solve it.

    • Antone

      I presumed you are referring to the last image. The distance 40 is taken from the center of those 2 circles.
      Hope I answered your question. Feel free to reach out to me with more detail about your question in case I’ am not answering it.

  • RashidBalza

    I got this all exercises wow its pretty good to work with this challenge. It took me a while for this one. thanks

    • Antone

      You are welcome, Rashid.

  • cadfilm

    Is this drawing completable without the two hints (135 deg and 40 dis), thanks in advance.

  • CADUser

    cannot get exact dimensions in image A using 4.64 radius, so i’d rather use 4.54 in order to get the 1 unit exact dimension..

  • CADUser

    am referring to exercise #19 by the way..