How to "glue" a model?

Rhino Rhino for Windows
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1

Made a 3D model , More precisely, a set of parts that make up the model. I can’t connect these parts. One 3 d model.

image
image1280×1024 129 KB

I used the commands _Shrinkwrap + quadremesh , but they didn’t give results.

девка6.3dm (10.3 MB)

2

This is what the Group command is for.