Filleting strangeness

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DrC
Posts: 9
Joined: Tue Sep 13, 2016 1:12 am

Filleting strangeness

Postby DrC » Wed May 29, 2019 5:06 pm

Hi guys ...

The picture says it all.

No help needed thanks - the task is proceeding.

Cheers

DrC

OS: Windows 10
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.17.13541 (Git)
Build type: Release
Branch: releases/FreeCAD-0-17
Hash: 9948ee4f1570df9216862a79705afb367b2c6ffb
Python version: 2.7.14
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 7.2.0
Locale: English/UnitedKingdom (en_GB)
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vocx
Posts: 736
Joined: Thu Oct 18, 2018 9:18 pm

Re: Filleting strangeness

Postby vocx » Wed May 29, 2019 6:06 pm

DrC wrote:
Wed May 29, 2019 5:06 pm
The picture says it all.

No help needed thanks - the task is proceeding.
What? Completely unnecessary post. The picture says nothing. Please explain with words.
User avatar
Hannu
Posts: 93
Joined: Fri Sep 11, 2015 4:12 pm
Location: Strängnäs - 1hr drive west from Stockholm, Sweden

Re: Filleting strangeness

Postby Hannu » Wed May 29, 2019 6:26 pm

DrC wrote:
Wed May 29, 2019 5:06 pm
The picture says it all.
---8<---
Word size of FreeCAD: 64-bit
Version: 0.17.13541 (Git)
Another user here...

I agree that the picture tells much, but not all...

I'd suggest that you upgrade, at least to the 0.18 version of FreeCAD.
Personally I have come to prefer the Daily build.

Now, I find the filleting functions finicky, there must be "space" for the fillet. If you have 1mm space all around the edge, sadly filleting often fails in strange ways if you set the fillet to 1mm (radius), even more so if you exceed the space.
On the other hand; if you use 0.99 radius it may well be fine.
Note that the space must be available everywhere, even minuscule imperfections matter.

Due to this I usually apply fillets as the very last step of a construction. Often also choosing to define "manual" fillets in sketches instead.

As fillets refer edges, "the topological naming problem" is in full effect ( https://duckduckgo.com/?q=the+topologic ... org&ia=web )
/Hannu