Ruled with proposal
The edges suitable for the creation of a ruled surface are shown to you by the software.
Pick the 2 first edges, then TopSolid'Mold proposes to you the next ones.
To "scroll" the proposals, it exists 'hot keys':
w
: previous proposition.
x
: next proposition.
espace
: validate the proposition.

The option, Check with shapes
= YES allows to the system to analyze the geometry
close to the parting lines (tangency, continuity,...). You may see a correct
result with this mode = NO, and failed with
mode = YES.
This kind
of surface is non associative. It means that they are no links with the
parting lines. If the shape change, then update the parting lines, you
will have to create another time the surface.
Topsolid online Help Index