I am trying to put a dome on top of a cylinder.
I draw a vertical (blue axis) line the height I want the “bump”.
I use arc tool that takes both ends and the mid high point to draw an arc.
I close one side of the arc from the base of the centre to the end.
I get a face
I delete the other side of the arc.
I choose the “follow me” tool.
I click on the face.
I choose the circle edge and follow it around and only parts of the arc “follow me”.
Once I am at the end I end up with large pieces of the dome missing and I can look down into the cylinder.
Where have I gone wrong.
I am a total noob and am using the free version of Sketchup.