Re: AutoCad help. How to draw a smooth curved line between a small and large circle

The best way I've found is to use The circle function w/
tan/tan/rad. You select the 'draw circle' icon, then type TTR
[enter], then select the first circle [ or radius] that you'd like
to be tangent to, and then the second one, then input the radius
you'd like on the connecting arc/circle and it'll input a circle
that is tangent to both other cirlces [ or arc's] and at the radius
that you desire. If you only want an arc between the circles and not
another circle then just trim off what parts you don't want, using
the two original circle as cutting edges.

Hope that help's
Jarrett Johnson

>
> AutoCad help. How to draw a smooth curved line between a small

and

> large circle.
>
> Hi all,
>
> I can't remember how to draw a curved line that joins two circles
> together. Imagine a circle 100mm and another circle 50mm, the
> centre distance apart will be say 300mm. Lets draw a straight

line

> from the top of each circle and join them together.
>
> On the bottom, instead of having a straight line, I want to make a
> curved line that will be concave. That is, the centre of the line
> has been lifted upwards closer to the top line. Like the opposite
> of a smiley face.
>
> What will happen is I can make a curve to join both circles but
> where they join the circles will be at the quadrants. So there

will

> not be a smooth blended transition onto the curved line. But

rather

> as soon as the curved line joins the quadrant at the bottom of the
> circle, it will have a bump/step there as it becomes the curved

line.

>
> It is like it needs to be joined further along the circumference

of

> the circle so that it blends in nice and smooth.
>
> I used to be able to do it, but I can not remember now.
>
> Any ideas?
>
> Peter
> Australia
>