Making a curved cylinder - Isometric

[tatrowbridge]

 Hi everyone - I'm working on an assignment for class right now. I'm relatively new to AutoCAD, so I don't know all of the options/functions/tools that exist within AutoCAD. My assignment is to make an exploded view of an item - I chose Frank Lloyd Wright's Johnson Wax office chair. (I'll attach a picture if I can.) The chair is made of round, steel pipes, and it must be drawn/made in an isometric view. The only way I've come up with to create this is by making the pipes out of isocircles, but that leaves them with hard edges. I was wondering if there is any way I could make a rounded tube/cylinder piece that curves while using an isometric plane? 

As you'll see in the picture of my AutoCAD drawing so far, I know how to make straight round pipes, just not the curved ones. I've tried filleting, but that just filleted the ends of the circles I erased.

My teacher suggested arc start/end/angle, but that created too much of an arc - almost a complete circle, rather than a half circle.

Any leads would be really helpful - thanks. 

[leeminardi]

You could sweep a circle along an arc or use revolve with a circle (but you would need to know the subtended angle). I think using sweep is the best approach .

[Kent1Cooper]

... or Extrude a Circle with the Path option, along an Arc.

[tatrowbridge]

For some reason, when I try that, it looks the same. I've tried with different ISO angles to see if that changed it - nothing. 😞

[tatrowbridge]

I tried the sweep option - it didn't quite work the way it should (I think.) It looks like the kinds of lines I want, but the positioning of them isn't right even though the circle I started with was. Any tips?

[leeminardi]

Create a model of the chair with lines and arc that represent the centerlines of the tubing.  Anticipate that you can use copy and mirro3d to make the  complete model so there's no need to make all the centerlines. Next make a few circles with a diameter equal to the differ sized tubing.  They can be anywhere.  Mine lie on the xy plane.  Give the sweep command then click a circle [enter] then a centerline.  Notice that the circle is deleted so you will need several circle to make all the tubing.  The arm supports are filleted lines which are used with sweep.  You can use union to make them one piece.

The proportions of my chair and tubing are not correct but should give you a feel for the workflow.