I seldomly use the thicken command, but it sounds like it should have
worked. If I was going to make a "U" channel, I would sketch the profile (8
lines, 4 vertical, 4 horizontal) then extrude.
"Ray Dyson" wrote in message
news:35D6EE5886255E43D19B69689C09F76B@in.WebX.maYIadrTaRb...
> Probably first of many!
> I extruded a u-channel as a surface. Three lines, one horizontal, two
> vertical.
> I then thickened it to create my part, both sides. I try to create a
sketch
> on any of the three inside surfaces. The sketch plane jumps to the outside
> surface. OK, no problem I can create a work plane us two edges and use it
> for my sketch. This works so I add another part starting with one of my
new
> work planes. Finish the part, further constraining it to the work planes.
> I now edit a part feature, update the part, update the assembly. I now get
> an error message telling me all of my constraint are trashed.
> Obviously my problem started with the thickened surface, but what am I
> missing? Shouldn't this approach have worked?
> Ray
>
>