Best way to do a half arc before revolve

[jmorphet]

When I draw a cross section which I plan to revolve, I am having a little trouble with the arc. If I draw a three point arc to the center axis, and revolve that sketch, I will have a small indentation in the top of the dome. If I mirror the outside endpoint of the arc and create an arc to both sides of the center axis, then trim the side I don't need, the arc comes out perfect and I get the dome shape without any indentation. Is there a better way to draw half the arc without getting the indentation in the center of the dome.

[g-andresen · Accepted solution]

Hi,

Try a tangential constraint

günther

[jmorphet]

Günther's answer makes sense. The drawing I included was from the approach I described of deleting half the arc and it automatically placed a tangent constraint. I tried drawing the half arc with a horizontal construction line and a tangent constraint. It did work.

Thanks