Chamfer Function.... Kinda Sucks....

[Anonymous]

One constant frustration with Fusion is the chamfer function seems, very consistently, to be extremely difficult to use on real-world parts.  I've used Solidworks for years, and had occasional problems.  In most cases, if I want to chamfer all the edges on a part, I simply have to click on one or two faces, and I'm done.  But with Fusion, it seems all but the very simplest parts either can't be chamfered at all, or require breaking the operation down into several, sometimes many, separate operations.  In a few cases, I simply could NOT get the part chamfered as I wanted at all, even after spending a ridiculous amount of time trying every possible option.

The part below is the latest, and most ridiculous, example.  Much of it chamfered just fine, though I had to break it into multiple operations.  But on the "back" face, the ONLY way I was able to get it done was to make multiple passes around the back edges, selecting individual segments.  On each pass, some segments would chamfer, some would not.  So I would de-select the ones that would not, and keep going.  On the next pass, SOME of the segments that would not chamfer previously, would.  After perhaps 3 passes, all segments were chamfered.  WTF??  It obviously COULD chamfer everything, but required me to play Whack-a-Mole to find the correct order in which to select the segments to make it work?  That is ridiculous!  On a more complex part, that could have taken hours!

Regards,

Ray L.

[HughesTooling]

I don't see the problem, Screencast attached. I deleted your chamfers and redid with one chamfer feature. File's attached.

Mark

[TheCADWhisperer]

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@Anonymous wrote:

...  I've used Solidworks for years, ....

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Can you attach your SolidWorks *.sldprt file model of this part here?

[HughesTooling]

OK I played around a bit more and found if you select the fillet in the image below first chamfer will fail. @Phil.E Can you take a look? I did find a couple more combinations failed but selecting the fillet below last worked every time.

Mark

[Anonymous]

Yes, it seems very dependent on the order of selection.  I've seen that consistently.  I also had trouble with a "two offsets" or "angle-offset" chamfer a few days ago, where only for some segments, it would flip the chamfer directions!  On that one, I spent about a half hour trying to get what I wanted, and finally gave up and used a 45-degree chamfer.  Fillets, seem to be almost as fussy.

Regards,

Ray L.

[Anonymous]

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@TheCADWhisperer wrote:

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@Anonymous wrote:

...  I've used Solidworks for years, ....

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Can you attach your SolidWorks *.sldprt file model of this part here?

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I don't have this part in SW.  It was designed in Fusion.

Regards,

Ray L.

[HughesTooling]

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@Anonymous wrote:

  I also had trouble with a "two offsets" or "angle-offset" chamfer a few days ago, where only for some segments, it would flip the chamfer directions! 

Regards,

Ray L.

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I've seen that sort of problem in a couple of other CAD programs I've used. The developers\programmes do not seem to understand the length parameter might need to be along the other face.

Mark

[Phil.E · Accepted solution]

@HughesTooling

Thanks for the find. I confirmed it in our latest development build. I too had no trouble with it so long as I picked the longest edges first. That is just a habit from years of CAD work, when filleting or chamfering a model, pick the longest contiguous edge first so you can then more easily determine the remaining picks. This shows how developing and testing CAD tools often depends on a myriad of habits and infinite combinations of inputs.

This is logged as a bug because pick order shouldn't cause a problem, with a special note that this is highly detailed work and it can be very frustrating to be required to manage pick order.

Thanks,