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  1. #111
    Super Moderator Cad64's Avatar
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    Quote Originally Posted by basty View Post
    None of those posts you mentioned above can make me understand and draw the arcs. See below pic for the work I done. Can somebody just tell me what is the next step?
    It has been explained to you several times, by several different people. The problem is that you don't have basic drafting knowledge or ability. We can't teach you how to be a drafter. You need to go to school in order to learn the skills necessary to do this type of work.
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  2. #112
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    I had never before come across the term "Maximum Arc Condition". But looking at the diagram, it is apparent to me what it means.

    This experience is what you lack, and I am unable to spoon-feed you further. This sort of terminology is used in real life, and you have to be able to understand it through further education, which is more than the scope of this forum, unless you meet a really, really nice person.

  3. #113
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    basty where are you in the world, maybe someone could point you towards a school or community college where you could learn these basics and at least someone there could physically point out what we are all showing you in words and pictures
    I've just been down graded from 2012LT to full Autocad 2017. I WANT LT BACK

  4. #114
    Quantum Mechanic ReMark's Avatar
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    Quote Originally Posted by basty View Post
    None of those posts you mentioned above can make me understand and draw the arcs. See below pic for the work I done. Can somebody just tell me what is the next step?
    Repeatedly asking us to provide information that has already been given in previous posts (ex. - #92, 96 and 106) is becoming annoying. Please stop. At this point it's best you stop trying to recreate this drawing and move on to something else. You can come back to it at a later date when you have more experience and/or training. Emphasis on training.

    Sometimes stepping away from a problem and doing something else then returning at a later date will give one new perspective and insight as regards a solution.
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  5. #115
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    Quote Originally Posted by Cad64 View Post
    Or, maybe basty should take the advice that has been mentioned several times and take some classes to learn about geometry, trigonometry and mechanical drafting.
    I do learned geometry and trigonometry but it was mathematically, not a drawing/drafting way. May you suggest me what geometry book so that I can be an expert in mechanical drawing?

  6. #116
    Quantum Mechanic ReMark's Avatar
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    basty: Check the website where you post under the name "dery".
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  7. #117
    Senior Member lrm's Avatar
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    It appears you need a refresher in the basic methods for drawing an arc or cirlce that satisfy different criteria. Chapter 4 in the following link should be helpful.

    http://navybmr.com/study%20material/...14069A_ch5.pdf

    I suggest that you put the current task aside and do some of the following tasks to sharpen your geometric construction understanding. Try to construct a fillet between two straight line (4 potential solutions), between a line and a circle (up to 4 solutions as well), and between 2 circles (up to 8 potential solutions) without using the AutoCAD fillet command or TTR option to the circle command. Also try drawing a circle through 3 points by using the methods outline in the referenced link to find the center and radius of the circle.

    Another tip I'd like to offer is a general problem solving strategy. When I get stumped by a problem and cannot see a solution I try to turn the problem upside down. An example of doing this for the problem you present is to change the question from "where is the tangent point of the circle" to "where is the center of the circle." This approach, coupled with the information in Ch 4.4.0 should help you find the center of the R 0.5 arc.

    Good luck.

  8. #118
    Super Moderator Cad64's Avatar
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    Quote Originally Posted by basty View Post
    I do learned geometry and trigonometry but it was mathematically, not a drawing/drafting way.
    That doesn't make any sense. What do you mean you learned geometry and trigonometry but it was mathematical, not drawing/drafting. There is no geometry or trigonometry for drawing/drafting. It's all mathematical.

    Geometry is a branch of mathematics concerned with questions of shape, size, relative position of figures, and the properties of space.
    Trigonometry is a branch of mathematics that studies relationships involving lengths and angles of triangles.

    If you studied these subjects then you should be able to apply them towards drawing/designing/drafting of any object.

    Quote Originally Posted by basty View Post
    May you suggest me what geometry book so that I can be an expert in mechanical drawing?
    If you want to be an expert in mechanical drawing then you Must Go To School, as I have said about a dozen times already. Not only do you need to re-learn geometry and trigonometry but you need to also learn basic drafting skills as well as general Autocad skills. You seem to be severely lacking in all of these areas and we cannot teach you these things here in the forum.

    You need to stop asking us how to draw things, or what books to buy, and start looking for a good school in your area.
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  9. #119
    Quantum Mechanic BIGAL's Avatar
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    Batsy posted 1:28am my time suggests not in Australia, else know of a few school links.
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