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.
Click on the circle first. Then activate Follow Me and finally click on the face.
If you are getting a hole in the dome, scale the model up by a factor of 10 or 100 and try again. SketchUp won’t make very short edge segments and without the edge segments, you can’t have faces. Those short segments can exist so you can scale back down after creating the dome. Or use the “Dave Method”. Search the forum for that. Box did a nice animation that shows how it works.
Select the path (perimeter, if you like) first, get the Follow Me tool, and click on the profile. Yes, the selection appears to go away but that’s not a problem.
You can select the edges of the path with a selection fence dragging it from left to right. You might need to orbit the camera a bit to make it easier to select only the edges you want.
How did you create the cylinder? Why is the perimeter exploded into segments?
Again, work at a larger scale to avoid the missing faces.
The lines on the side of your cylinder come from the vertices at the ends of the segments that made up the original circle. Your circle ended upexploded before the Push/Pull operation. Box’s didn’t. You can select those edges and use Soften/Smooth to create the look Box got.
As for the time, no worries. WE are here to answer questions like yours.
Probably the easiest is to triple click on the cylinder with the Select tool. This will select all attached geometry. Then right click and choose Soften/Smooth which should open the Soften Edges window. Drag the slider a little to soften only the edges you want. You can most likely slide it to the right and back to 30°.
You can also hold Ctrl while clicking over the edges to be softened with the Eraser tool.
One thing to note here is that Box created a face on top of the cylinder and used the face as the follow me path. As such you don’t need to pick all those edges (lines) along the circle’s edge.
To make the face on top of the cylinder, simply draw a line across the circle from one side to the other. Erase the line after the face has been created.
My only point is that, like in life, there are many paths to the same
conclusion. Some, granted can take a bit more time, but all will lead to a
similar understanding.
I really don’t want to debate anything here. I simply always note what
might have been left out to make things more clear to the new student.
I do a lot of live SU seminars and find that, being the more experienced
one leads me often to skip over what seems to me quite obvious until it is
pointed out by a student.
