Edges and bridge in W3D

[Aelin]

I have choosen a cylinder and a sphere for the quick explanation.
The bottom of cylinder was removed by Right click => Hole.
The half top of the sphere was removed by the same way.
Now you have edge facing edges. [screen capture 1]

To make short, it's impossible to do a bridge from an edge to another. No matter the 2 parts of your future object are "united" in only one geometry. [screen capture 2]

By this way, if for a reason or another you move a part on the 2, you will have a surprise, like on the third screen capture.

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[Aelin]

How to do?
In fact, like we don't see the inside of the object, it's possible to "cheat" by the creation of faces.
For this, move in Y either the half of the sphere, or what is staying from the cylinder. Goal here is to prepare the future bridge, and see what you do on each part.
I have choosen the half of sphere.

Select only edges of half-sphere like on the first screen capture below. And make Right click => Extrude => Y
Do the same for the bottom of cylinder. [all is done in the second screen capture below]
If necessary, bring back the 2 parts more closer from each other for the next step.

It's now time to do the bridge!
If you don't know yet the bridge, it's a maneuver to glue together 2 faces one in front of the other. Look a part of the result in the third screen capture below.

And voilà in the last picture!
I have selected only the "old" half-sphere to show it better.

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[thelufias]

My My My....  Love it when one learns something new.....  Nice one Aelin...

[mtdana]

I'll have to remember this - thanks Aelin!