Chamfer skipping section
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John Hackney, Retired
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from the image, it looks like that last cylinder might be a separate body. If so, you'd need to Combine it with the rest of the design for the Chamfer to work as you want it to.
Jeff Strater
Engineering Director
Accepted solution
@jeff_strater , it is not a separate body, the whole is extruded from one sketch. The only way I can find effectively to do it was to use a Surface cut and the Mirror and Pattern. Model is attached.
Edit: If you need further explanation on what I did, I will create a Screencast for you.
John Hackney, Retired
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From my understanding, Fusion tries to make a chamfer around the cylinders, rather than just diagonally as along the main contour. Since the cylinders has 1,5mm diameter, the 1mm chamfer will not be physically possible and the program starts to get lost. I tried to make smaller chamfer and the result is on the screenshot bellow.
Looks like the
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Rafał Chłód
Global Product Support
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@Rafal.Chlod @jeff_strater I thought I'd try a different approach adding the circular ribs to the chamfered body but no matter what I select this fails. Pretty sure this should work.
Even fails with a square! I reported another example a few days ago where extrude to fails if you try Extrude To a conical surface. See attached file and try editing the extrude.
Mark Hughes
Owner, Hughes Tooling
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a couple of things with this model.
First, @Rafal.Chlod is correct - Chamfer is defined as an edge chamfer, so it will try to go around the cylinders, not across it, as it seems you want it to, @Anonymous . You can see this at a chamfer distance of 0.3:
and, at 0.4, it starts to get "lost":
and some of the cylinders get sliced (which, I understand, is what you might want, but I would argue is incorrect behavior). Unfortunately, increasing the chamfer width does not turn all those cylinders into "sliced" cylinders
@HughesTooling regarding your approach. What is missing is better handling of automatic face extension. Today, I think, only planes and cylinders can be auto extended in Extrude. The face you need to extend is a cone. So, the workaround is to do it manually:
Jeff Strater
Engineering Director
@jeff_strater Here's the workaround I've used in this situation. I extrude part way up the chamfer then delete the top faces and then the conical face is extended. So not a problem in general with extending surfaces, just Extrude To option seems a bit fragile.
Mark
Mark Hughes
Owner, Hughes Tooling
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that's not what I meant, @HughesTooling , I was referring to the "auto extend" inside of the Extrude command:
I was trying to use this face as the "to object" here:
but that auto-extend inside Extrude only works on limited face geometry
Jeff Strater
Engineering Director