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Chamfer - why 2 chamfer processes achieve outcome that is impossible with only 1 process
martin_danger
Member Posts: 16 ✭
I run into this oddity often. I try to apply a chamfer (or fillet) to get my desired outcome and I am told that my desired outcome is impossible. Yet, if I apply that chamfer in 2 steps, everything works fine.
Is this an intended outcome? Is it a bug? What is the purpose of this behaviour? I would really like to know so that I know whether Onshape needs me to do something in a specific way or whether to ignore it as the error provides meaningless feedback. I want to understand in general terms what this program wants from me and this type of error/behaviour is very confusing and frustrating too when it seems to me to make so little sense.
So can anyone explain why, to Onshape, is screenshot 4 so different to screenshot 5?
Screenshot 1 - I can apply to top and bottom edges.
Screenshot 2 - Or I can apply to the side edges:
Screenshot 3 - I can even apply to 3 edges and no problem:
Screenshot 4 - But when I apply it to all 4 edges, Onshape says no, you have broken the overlapping chamfers rule, you may not pass.
Screenshot 5 - But there are no overlapping chamfers (or that rule is ignored) if I break up the chamfers into 2 steps (the screenshot shows step 2, step 1 chamfered the top and bottom edges).
Is this an intended outcome? Is it a bug? What is the purpose of this behaviour? I would really like to know so that I know whether Onshape needs me to do something in a specific way or whether to ignore it as the error provides meaningless feedback. I want to understand in general terms what this program wants from me and this type of error/behaviour is very confusing and frustrating too when it seems to me to make so little sense.
So can anyone explain why, to Onshape, is screenshot 4 so different to screenshot 5?
Screenshot 1 - I can apply to top and bottom edges.
Screenshot 2 - Or I can apply to the side edges:
Screenshot 3 - I can even apply to 3 edges and no problem:
Screenshot 4 - But when I apply it to all 4 edges, Onshape says no, you have broken the overlapping chamfers rule, you may not pass.
Screenshot 5 - But there are no overlapping chamfers (or that rule is ignored) if I break up the chamfers into 2 steps (the screenshot shows step 2, step 1 chamfered the top and bottom edges).
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