I'm experimenting with fillets and curves.
Sometimes when I create pads from sketches with curves, I can fillet the curved edge where it meets another flat face. Sometimes I get a message "Failed to create" and I can't figure out what conditions need to be met for a curve to be filleted.
Any thoughts?
OS: Windows 10 Version 2009
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.24291 (Git)
Build type: Release
Branch: releases/FreeCAD-0-19
Hash: 7b5e18a0759de778b74d3a5c17eba9cb815035ac
Python version: 3.8.6+
Qt version: 5.15.2
Coin version: 4.0.1
OCC version: 7.5.0
Locale: English/United Kingdom (en_GB)
Fillets and curves
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Re: Fillets and curves
There are conditions with fillets/chamfers.
- the fillet radius can't result in consuming an adjacent edge
- since the fillet process follows edges, it has difficulty when the edge leads to an intersection of 3 or more edges
- since the fillet process follows edges it is best to make sure any transition from edge to edge or edge to curved edge is tangent
- fillets between round features will most likly fail (especially a round feature that is tangent to another feature, think the intersection of two pipes of the same radius)
- Sometimes it is best to set the Refine property of the last feature to true before attempting to fillet
Star Trek II: The Wrath of Khan: Spock: "...His pattern indicates two-dimensional thinking."
Re: Fillets and curves
Good comprehension. (Point 4 is a possibility to avoid point 2.)drmacro wrote: ↑Tue Jan 18, 2022 1:02 pm
- the fillet radius can't result in consuming an adjacent edge
- since the fillet process follows edges, it has difficulty when the edge leads to an intersection of 3 or more edges
- since the fillet process follows edges it is best to make sure any transition from edge to edge or edge to curved edge is tangent
- fillets between round features will most likly fail (especially a round feature that is tangent to another feature, think the intersection of two pipes of the same radius)
- Sometimes it is best to set the Refine property of the last feature to true before attempting to fillet
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Re: Fillets and curves
Any suggestions on how to fillet the highlighted edges (though not necessarily all with the same radius)?
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Re: Fillets and curves
Did you read my 4th point...this is an example.
Star Trek II: The Wrath of Khan: Spock: "...His pattern indicates two-dimensional thinking."
Re: Fillets and curves
Yes, I read it, and realised this fitted that category.
I was hoping there was a solution
Would it be possible to use a Sweep rather than a fillet? My gut says yes, but my head explodes when I try to work out how to do it.
I was hoping there was a solution
Would it be possible to use a Sweep rather than a fillet? My gut says yes, but my head explodes when I try to work out how to do it.
Last edited by idris on Thu Jan 20, 2022 10:10 am, edited 1 time in total.
Re: Fillets and curves
... a small dimension difference and refinement may solve the "fillet intolerance" - as drmacro said
- Attachments
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- Fillet_3.FCStd
- FC.19.3
- (342.29 KiB) Downloaded 9 times
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- Fillet_2.FCStd
- FC.19.3
- (59.71 KiB) Downloaded 6 times
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- Fillet.FCStd
- FC.19.3
- (44.49 KiB) Downloaded 7 times
Re: Fillets and curves
Hi idris, greetings to the Community!
Without the availability of the original file, you can only outline some solutions, four examples of filleting are attached, but I don't know if they are right for you.
- Attachments
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- fitting.FCStd
- (948.22 KiB) Downloaded 18 times
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- examples_filleting.png (197.74 KiB) Viewed 993 times