Scale part of an object

I have a bunch of scaling to do and I’m hoping to avoid recreating parts.

Is there a way to reduce or increase the length of an object without affecting the geometry of the ends of object? In this case I have mitred joinery on each end of closed polysurface. So I am looking for a way to shorten the polysurface and preserve the 45º angle at each end. Possible?

I’m using Rhino 5.

Will sub-object selection work for you? ctrl+shift then select the end sub-objects of the parts. Once they’re selected just drag them to create the right length part.
GIF

Perfectly :slight_smile:

Thank you.

Or use MoveFace

That will also work in most situations. In this case it’s not a planar face so it doesn’t quite work here. But it will for other stuff. Thanks.