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Why can't I loft these two simple profiles to create (fake) a variable radius fillet?
StephenG
Member Posts: 369 ✭✭✭
The two profiles have the same basic shape and same number of vertices on each profile.
Is it because the two profiles have an edge that superimpose one another?
Is there another technique I should try?
Is it because the two profiles have an edge that superimpose one another?
Is there another technique I should try?
0
Best Answers
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elif
Onshape Employees Posts: 53 
@StephenG Please take a look at
https://cad.onshape.com/documents/2a88780b60140dd38ada5591/w/9435e6b2eae78fdef93d3dbb/e/9624a06e3a694b40ab5c4b46
Is this not what you had in mind?
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Answers
Well, I'll be... it worked, gave me the exact solid volume I wanted. Is this a bug?
projektowanieproduktow.wordpress.com
Is this a bug?
projektowanieproduktow.wordpress.com
@StephenG please do file a bug report. I think I know what's going on. Thanks.
I will go ahead and submit a bug report, but in the future I would like to see a mechanism exist that would allow me (the author) to "promote" a question, or discussion to either a feature request or a bug report. The information (context) of discovering this limitation (bug) is important for the person(s) understanding how to address it.
In the interim I suggest you tweak the Online Help to make users aware of this limitation...
Add the following text....
o Profiles curves cannot superimpose other curves in profiles selected to be part of the loft.
https://cad.onshape.com/documents/2a88780b60140dd38ada5591/w/9435e6b2eae78fdef93d3dbb/e/9624a06e3a694b40ab5c4b46
Is this not what you had in mind?
Wait a minute... I see how you did it. When I checked the Match Vertices option I never completed the important step of actually designating what vertexes to match together. I just assumed the software would preform its magic and give me the most "relaxed" solution with minimum twisting. I can envision how loft looks at the vertices of each profile and tries to create an ordered relationship that will create a result with minimum twist. I am guessing when two vertices have the equivalent XYZ location it thought this cannot be, something must be wrong. Should be a simple code fix to handle this condition.
So why didn't OS prompt me, "Hey dummy, if you use the Match Vertices option you got to at least give me 1 set to match up!"?
Is it true that one can only specify 1 set of vertices to match? Why the limitation and why doesn't the UI wording reflect that? "Match vertices" should read "Match 2 vertices" and it should not be possible to select more than 2. And it should not be possible to select 2 vertices from the same profile sketch.
OS is full of places where you have to know precisely how to drive it; easy for someone who wrote the code but kind of challenging for a new user. A little more bounds checking and selection filtering in the UI would go a long to making the product easier to master.
Anyway, much thanks for showing me the errors of my way.