Help - Circle

[Damon :)]

I am new to the whole CAD experience, how do I add width or thickness to a circle?

 

Thanks.

[ReMark]

You don't. Use the DONUT command instead unless of course you want to use a custom lisp routine to do the job for you.

 

Circle on left has an O.D. of 2 units.

Donut on right has an I.D. of 1.8 units and an O.D. of 2 units.

[ReMark]

Re: Thickness.

Be careful with this as AutoCAD construes thickness to mean height. See what happens when THICKNESS is changed from its default. The circle to the left has a "0" thickness (the default setting); the one to the right has a 0.25 thickness.

[Damon :)]

Thank you:D

[Dazacad]

See this tip.

 

http://www.cadtutor.net/forum/showthread.php?24924-Adding-global-width-to-a-circle

 

 

Start by making a polygon with 4 sides. Check inscribed in circle when prompted. Next specify your radius. That will create a square. Then select polyline edit, then select fit, then width.

[ReMark]

Daz: Just how does one control the radius of a circle drawn in this manner (derived from a "fitted" polyline)? Try it (the Polygon method) using 1" as the radius. After doing a PEdit > Fit what is the radius of the circle that has been created?

[Dazacad]

Remark,

 

I got a radius of 1".

 

You don't actually get a circle as it's a 2d polyline or just a 4 arcs joined together.

 

If you want to increase the size, you can use the offset command.

 

I've never needed this to be accurate as I only use it to create blocks such as a circle with an attribute inside, so near enough was good enough.