OK, so I have a fairly complex surface that I want to offset.
But when I hit the green check:
What am I doing wrong? Why is this happening?
One suggestion. All of those constraint curves might be better used to make a ribbon that goes around the surface, and then use the edge of the ribbon as a tangent to face control. Both Fill surfaces where you've used that technique with the control curves are behaving oddly.
In this model, I used the little control sketches to make the ribbon, and then forced it to the outside with a ruled surface, then used the ruled surface to create the Fill surface. It doesn't look like your original, but I'm not sure how intentional all the shape in the original really was. The one I made offsets correctly. Not sure if this technique works for what you're doing, but all of those constraint curves are kind of unconventional, at least I've never done that. I prefer to work from surfaces like this.
If you check it with Tools, Check, there is a general error, which comes from the first fill surface.
Not sure if the attached file will help, sw19 version.
I was able to create the offset.
What did you do differently?
Every time I create the offset it shows like the 2nd picture. hrmm...
I did this by different way.
OR changing the direction will also gives correct result.
What works from here is to Offset the other way .5mm and then select that surface and offset .95mm, if I go more than that it fails, which tell me something is overlapping in the new surface.
If I try to go .45mm right away it doesn't work, but if I go back .5mm and then the other way .95 it works
OK, Well....maybe I am going about this the wrong way....but I am flabbergasted, because the preview shows correctly every time.
Thanks all for taking the time to work on this.
ok Matt, I redid it completely. I deleted all the areas that I started with and started from scratch. This time, I extruded a surface from the top and used my "boundary sketch" without the fillets to trim that surface, then use a ruled surface (perpendicular to the surface). Then added in fillets back to the ruled surface. This worked so much better and easier. I can see now how I was doing a lot of extra work. Your post helped me to get there! Thank you!
Then offsetting my pin surfaces both directions and use all 4 sets to create an Intersect.....then combine with the pin. This gives me my cutting surface.
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