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  1. #1
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    Default How to Draw This Thing?

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    How to draw this?



    See the drawing of mine in attached ACAD file (it's not finish yet).

    Is there something wrong with my drawing?

    The R 0.81 make me confuse because it doesn't fit to the drawing.
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    It is not unusual that these types of drawing exercises have erroneous or missing information.
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    Default 3D Model the Part

    Rather than drawing a 2D isometric, I'd recommend 3D modeling the part and then creating an isometric view of it. You could use the model documentation tools to set up the view. Add the annotation in paper space using associated dimensions that have the isometric settings added to them.

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    Quote Originally Posted by ReMark View Post
    It is not unusual that these types of drawing exercises have erroneous or missing information.
    If you say so, why my drawing result is different from the problem (see below image)?



    Quote Originally Posted by 3D generator View Post
    Rather than drawing a 2D isometric, I'd recommend 3D modeling the part and then creating an isometric view of it. You could use the model documentation tools to set up the view. Add the annotation in paper space using associated dimensions that have the isometric settings added to them.
    I am practicing my 2D drawing skill, 3D modeling is a lot easier than 2D drawing.

    So, do anyone know where the mistake I made or the problem might slight error?
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    Default

    If you look at the diagrams, it is apparent to me that the 1/2"R fillet at the bottom is tangential horizontally, but not vertically.

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    I agree, 3D modeling is easier than 2D isometric drawing so why not use it? 2D isometric drawings are for software that can't handle 3D geometry. If you can 3D model it you should as it's faster and more accurate.

    As far as fixing the existing 2D isometric goes, it looks like the isocircle diameter at the left end of the part is too big. If you reduce it to match the intended intersection it should fix the drawing.

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    Eldon is correct. See below.

    I would also agree that 3D is much easier and faster, so why don't you use it to your advantage? Create the 3D model and then generate your isometric view from the model.

    As I always say, use the right tool for the job and work smart, not hard.
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    Agree with Eldon and Cad64

    2*.81 = 1.62, 1.94 -1.62 = 0.32 so not a full tangent hor & vert.
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  10. #10
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    Default

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    Quote Originally Posted by eldon View Post
    If you look at the diagrams, it is apparent to me that the 1/2"R fillet at the bottom is tangential horizontally, but not vertically.
    You were very observant. How did you notice that?

    Quote Originally Posted by Cad64 View Post
    Eldon is correct. See below.

    I would also agree that 3D is much easier and faster, so why don't you use it to your advantage? Create the 3D model and then generate your isometric view from the model.

    As I always say, use the right tool for the job and work smart, not hard.

    Thank you guys for the clue and hint.

    Last edited by basty; 29th Jan 2018 at 09:48 am.

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