curved illusions in 2d

[clmarchand]

How do you make curved elements appear curved in a 2d drawing?

[BIGAL]

Try Thickness on an arc and lines then vpoint 1,1,1

[rkent]

Shading techniques.

[tzframpton]

Just to ask... is 3D out of the question?

[clmarchand]

yes I only work in 2d

[BIGAL]

Did you try thickness its a 2.5D trick ?

[clmarchand]

I've never used shade, how do you do that?

[rkent]

I've never used shade, how do you do that?

 

It isn't a command, it is old school drawing. See attached.

[clmarchand]

And I don't know what your talking about with the thickness command either, how do I do that?

[clmarchand]

so this image just looks like the edges are hatched right? I tried that and it's not as pretty as that

[rkent]

You will want to draw individual lines, closer to the edge, further apart toward the center. See the left most image, the others are sections with hatch.

[Dana W]

Use the gradient fill.

[ReMark]

Better yet...learn 3D.

 

If you must stick with 2D then pick up a copy of Basic Technical Drawing by Henry Cecil Spencer. It's old school drafting at its best.

 

Even better is the book Engineering Drawing by Thomas French. Take a look at chapter 24 entitled Illustration. There you will find such techniques as line shading, cylinder shading, continuous-tone shading, line-tone shading, smudge shading and brush-stipple shading discussed and demonstrated.

Edited January 30, 2014 by ReMark

[tzframpton]

Here's an example of rkent's method.... unless he has a better/different method.

linework_shading.dwg

[f700es]

Use the gradient fill.

 

+1 right here

[rkent]

Here's an example of rkent's method.... unless he has a better/different method.

 

That is the one, thanks for posting the drawing.

 

Using an ellipse will give a little bit better effect than a circle. The image is rotated 90 but you get the idea.

Edited January 30, 2014 by rkent