Autocad 2009 Isometric drawing, tangent Isometric circle

[khmercha]

I am creating an isometric drawing where there is a corner. I would like to fillet the corner with an isometric circle. Is there an easy way to make the iso circle tangent to the corner??

 

[cherrypicker]

Fillets, chamfers, circles and arcs etc require the UCS to be aligned to the drawing plane so that the element can be drawn in the X and Y directions

 

[zuccus]

One of the options in the circle command is TTR. Stands for tangent, tangent, radius.

I use this when drawing isometrically (10 years ago mind you). It is the closest approximation you are going to get.

Zuccus

 

[Exxit]

Hi,

what is an isometric circle? An ellpse?

L.

ADT 2004

 

[khmercha]

yes it is an ellipse. thanks for the response guys

 

[chicopee]

While an isometric circle is an ellipse, the fillet command in an isometric drawing produces an arc of a circle.

 

[frankreid]

I frequently do large and complicated isometric drawings in 2D using LT 2009. These are good questions. An isometric is indeed a circle but with the i parameter turned on. If it's not showing in the circle command then you need to switch on the Isometric Snap.

Right click on the grid display button, select Settings and click on that radio button in the lower left corner. Now when you give the Circle command, the i parameter will show. Type i then you can create an isometric circle - a perfect ellipse.

But for general use on corners, I always use the fillet command or button and set it to a low number, quarter inch or less. It looks good enough and is much simpler. Remember, this is isometric ILLUSTRATION. It's not supposed to be engineering perfect. For that you do a solid model.

If you need a larger ellipse just create it the size you want and then move it into place by zooming way up and putting about where you want it. Then move it to touch the line needed. Repeat for the other side, then trim it back.

I hope this helps.
Frank

 

[frankreid]

OOPS! I said it wrong. It should have said,

"Now when you give the Ellipse command, the i parameter will show."

Not the Circle command.

Frank

 

[khmercha]

Frank,
Great advice, exactly what I needed. Thanks a lot.