drawing arc between two fixed points and setting radius

Roland,

If you could provide an example file that would be helpful. But generally when drawing an arc (using the arc command) you use center point, or three points, the three point option allows you to pick the start and end, then define the arc radios.

Ronald Doctors wrote:

 

I tried fixing the points and sometimes I found the ends of the arc stayed at the fixed points when i changed the radius but now the arc and its end points move from the fixed points. Is there a way to fix the start and finish points when drawing an arc?

Hi Ronald,

Welcome to the Forum. One thing to keep in mind when asking a question here. You should always include at least an image or better yet a file illustrating the problem you're having.

It's hard for us to help you if we don't have a clear understanding of the problem.

That said, Have you fully defined the end points of your arc? Maybe dimension them to the origin?

You said "when i changed the radius."  I take that to mean that the end points of the radius moved when you set or edited the dimension controlling the arc radius, or just tried to change the radius by dragging.  If that's the case, then you need to lock down the end points, with relations or dimensions, first.  Then they can't move.  If this doesn't answer your question, can you post the Part file, or at least a screenshot?  See How can I attach a file to a forum post? if you aren't familiar with the process.  Of course, if it does help, please reply anyway.