Bad Loop

[CheshireCat5]

I have a part that is vertically symmetrical, i.e., the left side is a mirror of the right. A fillet of a curving, inside corner on the right successfully completes, but the identical corner on the left fails, with the error dialogue suggesting it may be a bad loop. The corner to be fillet is the intersection of an extruded shape and a lofted one.
The successful one on the right was just a simple, garden-variety 3/8" radius fillet. The left one will not succeed regardless of what type of fillet I try. The fillet "Expert" failed, of course, but also trashed the loft in the process, making it more of a "Fillet Demon". Google research seems to indicate I'm screwed as far as the fillet goes. But if anyone has ever figured out how to "fix" a "bad loop", I'd love to hear how. I believe this is a program error since the left feature was created by mirroring, and should therefore have an identical loop to the one that was successfully filleted (maybe an internal rounding ramification?)[/highlight]

 

[Timelord]

If you delete it from the mirror sketch and then just add it to both sides after mirroring, does it still fail?

Timelord

 

[CheshireCat5]

There's no "Mirror sketch" - I'm not sure what you mean by that. I'm referring to mirrored bodies, which were subsequently combined to the "main body" (had to be done that way - long story).

But- not to worry - I finally stopped fighting with the fillet, changed the order of some operations, and now it's fine. SW can be quirky, and sometimes you just have to step back and think logically, rather than be combative. You can stop reading here, but if you'd like to hear the longer story, here it is:

That offending fillet HAD already been succsessful before I found that i had to increase the draft (cast part) in an area that's close to the filleted area. After increasing the draft, that's when the fillet failed. I didn't want to hear that, so I fought and fought with the stupid fillet, to no avail. Too caught up in battle, it didn't occur to me that, well, SW simply cannot make this fillet after that increase in draft - so I took the draft out completely, went to the Feature Tree "Time Machine", and put the draft back in after the fillet. Problem solved.

 

[SBaugh]

I have seen this before and its usually a bad relationship on either one side of on both causing the error.

One way to try and fix it other than just deleting relationships or dimensions. is to trim off one side entirely and mirror the sketch about a centerline.

Scott Baugh, CSWP

http://www.superATV.com

http://www.scottjbaugh.com

"If it's not broke, Don't fix it!"

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