MoveEdge messes up base surface and radiused edge

Hi,
V5
I need to heighten the upper wall edges of the shape, up to the green line in side view, I use MoveEdge, afterwards I see the neat radiused lower edge is lost and the neat surface is now not so neat, walls seem sucked in a bit, visually.

why ?

MoveEdge messes with base and radiused edge.3dm (973.4 KB)

Cheers

Steve

MoveEdge and the other solid editing tools often just turn your geometry into garbage.

The surface you are trying to trim is a composite surface that is really 3 surfaces composed into one. If you run TestSplitAtTangents in Rhino 5 it will turn that surface into a proper polysurface. You can then turn the large bottom surface into a single planar surface with merge face.

1 Like

Hi Jim,
I was putting too much faith into those tools, I have recently discovered the tools and making great use of them.
so rule of thumb is, do the suggested command TestSplitAtTangents, then use the tools.

Cheers

Steve