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Adding fillet between lofts 4

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ctopher

ctopher

Mechanical
Jan 9, 2003
17,506
Hi guys.
I'm back running on SolidWorks 2009 SP4 (after 3.5 years).

I have two lofts merging on a part. How can I select the edge between them to create a fillet? It wants to select the faces and I don't see an option for selecting the edge.
Attached is a .jpg.

Chris
SolidWorks 09, CATIA V5
ctopher's home
SolidWorks Legion
 
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Are the two lofts merged? If not combine them, then try again.

Solidworks isn't going to let you fillet between two seperate bodies like that.

James Spisich
Design Engineer, CSWP
 
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Are they just surface lofts? Have you tried closing/knitting them to be solid?

If not that, have you tried trimming one away from the other, then trying to combine?

What was the method you used to create the two lofts? Is this two features in a single master part, or two parts in an assembly?

I'd say post it up, but I'm on SW 2006 still so I can't exactly play with it for you. Best I can do is understand how you created them.

James Spisich
Design Engineer, CSWP
 
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They're probably surface bodies or separate solid bodies (check your Surface and Solid folders at the top of the tree).

One other possibility with something like this is that the vertex you're attempting to fillet might go from concave to slightly convex at the end of your loft. If so, this will get a bit more complicated, since a fillet cannot invert itself while holding a radius (passes through either infinity or zero--bad mojo). I have a fix for that, but let's see if the body issue reveals anything first.



Jeff Mowry
A people governed by fear cannot value freedom.
 
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I think I figured out your problem. You said it's not allowing you to select the edge. That means it doesn't exist. You've got intersecting surface or solid bodies. Select each body and select the Combine feature to combine the bodies (use the add option). Then see if you can fillet this edge without hitting the concave/convex problem I mentioned above.



Jeff Mowry
A people governed by fear cannot value freedom.
 
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This is a part. They were created as separate surface lofts within this part.
The go thru each other making the intersecting edge.
Interesting, when my boss did this on his part, it worked. The combine will not allow selection of surface loft edges.

Chris
SolidWorks 09, CATIA V5
ctopher's home
SolidWorks Legion
 
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Oh--for surfaces, use the Trim feature with the Mutual options checked. Trim, and then Knit the surfaces before attempting the Fillet. Should work fine.



Jeff Mowry
A people governed by fear cannot value freedom.
 
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Thanks Jeff.
The trim feature does not like the lofts.
I will wait for my boss and ask how did he do it. I copies his model, but the fillet does not behave the same as his. Maybe his was v2008 and I'm in v2009? I will ask him.

Chris
SolidWorks 09, CATIA V5
ctopher's home
SolidWorks Legion
 
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No problem. Let me know if you'd like me to have a look. I do surfacing "for a living", but it sounds like your boss can help a bit more directly than I.



Jeff Mowry
A people governed by fear cannot value freedom.
 
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Chris ... can you place a plane at the intersection of the bodies, and use it to trim the surfaces?

Can you select other surface or solid edges?
 
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I would guess you only need one of those surface lofts and the other could be mirrored. Going along with what CBL said, why not cut (along mid plane) the surface before mirroring. After mirroring, use Knit, and all should meld fine. Then Fillet.



Jeff Mowry
A people governed by fear cannot value freedom.
 
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I can't mirror, they are different.
i think what I will do...this is a molded part, I will create the fillet within the mold itself.

Chris
SolidWorks 09, CATIA V5
ctopher's home
SolidWorks Legion
 
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