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Problems with dimenioning - is it possible to extend a circle on a drawing?


New member

I have difficulties with making a 12mm dimension line for where the line would have crossed the circle if it had been whole.
I have attached to pics of what happens when I try to make my dimension, and what I want.

Is it possible to extend the circle Or in any other way to achieve my goal.

I have tried to draw a circle onto the drawing, but that does not update if I change the diameter of 173.

Goal.jpg Current.jpg

Thanks :)



Super Moderator
Simon, could you better explain what you are trying to do. I've looked at all three of the attached images, and I don't understand your question. thanks.